# 幾何
## Chinese
### Etymology
#### geometry

    First used in Xu Guangqi and Matteo Ricci's translation of Euclid's Elements in 1607. The derivation likely comes the sense of 幾何 meaning "how many?/how much?" broadened to be a term denoting mathematics concerning number and magnitude in general. The application of the term to specifically mean geometry would have been the result of the way the work was published, in groups of books with long intervals between. When the first six books were published together, the main content of the work was on plane geometry, so 幾何 became a term referring to just that.

### Pronunciation 1

* Mandarin
    (Pinyin): jǐhé
    (Zhuyin): ㄐㄧˇ ㄏㄜˊ
* Cantonese
    (Guangzhou–Hong Kong, Jyutping): gei$^2$ ho$^4$
    (Taishan, Wiktionary): gei$^2$ ho$^3$
* Southern Min
    (Hokkien, POJ): kí-hô / kí-hô͘ / ki-hô / ki-hô͘
    (Teochew, Peng'im): gi$^1$ ho$^5$
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: jǐhé
*** Zhuyin: ㄐㄧˇ ㄏㄜˊ
*** Tongyong Pinyin: jǐhé
*** Wade–Giles: chi$^3$-ho$^2$
*** Yale: jǐ-hé
*** Gwoyeu Romatzyh: jiiher
*** Palladius: цзихэ (czixɛ)
*** Sinological IPA : /t͡ɕi²¹⁴⁻²¹ xɤ³⁵/
** (Standard Chinese, erhua-ed)
*** Hanyu Pinyin: jǐhér
*** Zhuyin: ㄐㄧˇ ㄏㄜˊㄦ
*** Tongyong Pinyin: jǐhér
*** Wade–Giles: chi$^3$-ho$^2$-ʼrh
*** Yale: jǐ-hér
*** Gwoyeu Romatzyh: jiiher'l
*** Palladius: цзихэр (czixɛr)
*** Sinological IPA : /t͡ɕi²¹⁴⁻²¹ xɤɻ³⁵/
* Cantonese
** (Standard Cantonese, Guangzhou–Hong Kong)
*** Jyutping: gei$^2$ ho$^4$
*** Yale: géi hòh
*** Cantonese Pinyin: gei$^2$ ho$^4$
*** Guangdong Romanization: géi$^2$ ho$^4$
*** Sinological IPA : /kei̯³⁵ hɔː²¹/
** (Taishanese, Taicheng)
*** Wiktionary: gei$^2$ ho$^3$
*** Sinological IPA : /kei⁵⁵ hᵘɔ²²/
* Southern Min
** (Hokkien: Xiamen, Zhangzhou, General Taiwanese)
*** Pe̍h-ōe-jī: kí-hô
*** Tâi-lô: kí-hô
*** Phofsit Daibuun: ky'hooi
*** IPA (Xiamen, Taipei): /ki⁵³⁻⁴⁴ ho²⁴/
*** IPA (Zhangzhou): /ki⁵³⁻⁴⁴ ho¹³/
*** IPA (Kaohsiung): /ki⁴¹⁻⁴⁴ hɤ²³/
** (Hokkien: Quanzhou)
*** Pe̍h-ōe-jī: kí-hô͘
*** Tâi-lô: kí-hôo
*** Phofsit Daibuun: ky'hoo
*** IPA (Quanzhou): /ki⁵⁵⁴⁻²⁴ hɔ²⁴/
** (Hokkien: Xiamen, Zhangzhou)
*** Pe̍h-ōe-jī: ki-hô
*** Tâi-lô: ki-hô
*** Phofsit Daibuun: ki'hooi
*** IPA (Xiamen): /ki⁴⁴⁻²² ho²⁴/
*** IPA (Zhangzhou): /ki⁴⁴⁻²² ho¹³/
** (Hokkien: Quanzhou)
*** Pe̍h-ōe-jī: ki-hô͘
*** Tâi-lô: ki-hôo
*** Phofsit Daibuun: ki'hoo
*** IPA (Quanzhou): /ki³³ hɔ²⁴/
** (Teochew)
*** Peng'im: gi$^1$ ho$^5$
*** Pe̍h-ōe-jī-like: ki hô
*** Sinological IPA : /ki³³⁻²³ ho⁵⁵/
* Middle Chinese: kj+jX ha
Rime :
| Character | 幾 | 何 |
| Reading # | 3/4 | 1/2 |
| Initial (聲) | 見 (28) | 匣 (33) |
| Final (韻) | 微 (20) | 歌 (94) |
| Tone (調) | Rising (X) | Level (Ø) |
| Openness (開合) | Open | Open |
| Division (等) | III | I |
| Fanqie | 居狶切 | 胡歌切 |
| Baxter | kj+jX | ha |
| Reconstructions |||
| Zhengzhang Shangfang | /kɨi$^X$/ | /ɦɑ/ |
| Pan Wuyun | /kɨi$^X$/ | /ɦɑ/ |
| Shao Rongfen | /kiəi$^X$/ | /ɣɑ/ |
| Edwin Pulleyblank | /kɨj$^X$/ | /ɦa/ |
| Li Rong | /kiəi$^X$/ | /ɣɑ/ |
| Wang Li | /kĭəi$^X$/ | /ɣɑ/ |
| Bernhard Karlgren | /ke̯i$^X$/ | /ɣɑ/ |
| Expected Mandarin Reflex | jǐ | hé |
| Expected Cantonese Reflex | gei$^2$ | ho$^4$ |
* Old Chinese
    (Baxter–Sagart): /*kəjʔ [ɡ]ˤaj/
    (Zhengzhang): /*kɯlʔ ɡaːl/
Baxter–Sagart system 1.1 (2014) :
| Character | 幾 | 何 |
| Reading # | 2/2 | 1/1 |
| Modern Beijing (Pinyin) | jǐ | hé |
| Middle Chinese | ‹ kjɨj$^X$ › | ‹ ha › |
| Old Chinese | /*kəjʔ/ | /*[ɡ]ˁaj/ |
| English | few; how many | what |
| Notes for Old Chinese notations in the Baxter–Sagart system: * Parentheses "" indicate uncertain presence; * Square brackets "" indicate uncertain identity, e.g. *[t] as coda may in fact be *-t or *-p; * Angle brackets "<>" indicate infix; * Hyphen "-" indicates morpheme boundary; * Period "." indicates syllable boundary. |||
Zhengzhang system (2003) :
| Character | 幾 | 何 |
| Reading # | 2/4 | 1/2 |
| No. | 5800 | 7458 |
| Phonetic component | 幾 | 可 |
| Rime group | 微 | 歌 |
| Rime subdivision | 1 | 1 |
| Corresponding MC rime | 蟣 | 何 |
| Old Chinese | /*kɯlʔ/ | /*ɡaːl/ |

#### Adverb

幾何
* (literary) how much; how many
       Nín nǚ'ér fānglíng jǐhé? [Pinyin]
       How old is your daughter? [honorific]

##### Synonyms

| Variety | Location | Words |
| Classical Chinese | Classical Chinese | 幾, 幾何, 幾多, 幾許, 多少 |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 多少 |
| Northeastern Mandarin | Beijing | 多少 |
| Northeastern Mandarin | Taiwan | 多少 |
| Northeastern Mandarin | Singapore | 多少 |
| Jilu Mandarin | Jinan | 多少 |
| Central Plains Mandarin | Xi'an | 多少 |
| Southwestern Mandarin | Chengdu | 好多 |
| Southwestern Mandarin | Wuhan | 幾多, 好多 |
| Southwestern Mandarin | Guilin | 好多 |
| Southwestern Mandarin | Xiangtan (Jiangnan Industries Group koine) | 幾, 幾多 |
| Jianghuai Mandarin | Yangzhou | 多少 |
| Jianghuai Mandarin | Hefei | 好些, 好多 |
| Cantonese | Guangzhou | 幾多, 幾 |
| Cantonese | Hong Kong | 幾多, 幾 |
| Cantonese | Taishan | 幾多 |
| Cantonese | Dongguan | 幾多 |
| Cantonese | Yangjiang | 幾多, 幾 |
| Cantonese | Singapore (Guangfu) | 幾多, 幾 |
| Gan | Nanchang | 幾多 |
| Hakka | Meixian | 幾多 |
| Hakka | Miaoli (N. Sixian) | 幾多 |
| Hakka | Pingtung (Neipu; S. Sixian) | 幾多 |
| Hakka | Hsinchu County (Zhudong; Hailu) | 幾多 |
| Hakka | Taichung (Dongshi; Dabu) | 幾多 |
| Hakka | Hsinchu County (Qionglin; Raoping) | 幾多 |
| Hakka | Yunlin (Lunbei; Zhao'an) | 幾多 |
| Jin | Taiyuan | 多少 |
| Northern Min | Jian'ou | 幾多 |
| Eastern Min | Fuzhou | 若夥 |
| Eastern Min | Singapore (Fuqing) | 若夥 |
| Southern Min | Xiamen | 偌濟 |
| Southern Min | Quanzhou | 偌濟 |
| Southern Min | Shishi | 偌濟 |
| Southern Min | Zhangzhou | 偌濟 |
| Southern Min | Zhao'an | 偌濟 |
| Southern Min | Tainan | 偌濟, 幾 |
| Southern Min | Penang (Hokkien) | 幾 |
| Southern Min | Singapore (Hokkien) | 偌濟, 幾 |
| Southern Min | Manila (Hokkien) | 偌濟, 幾 |
| Southern Min | Chaozhou | 若濟 |
| Southern Min | Shantou | 若濟 |
| Southern Min | Jieyang | 若濟 |
| Southern Min | Puning | 若濟 |
| Southern Min | Pontianak (Teochew) | 若濟 |
| Southern Min | Haikou | 偌濟 |
| Southern Pinghua | Nanning (Tingzi) | 幾多 |
| Wu | Shanghai | 多少, 幾化, 幾多化 dated |
| Wu | Shanghai (Qingpu) | 幾好 |
| Wu | Shanghai (Jiading) | 幾漢 |
| Wu | Shanghai (Chongming) | 多話 |
| Wu | Suzhou | 幾化 |
| Wu | Wuxi | 幾化 |
| Wu | Ningbo | 多少 |
| Wu | Wenzhou | 幾倈兒, 幾倈 |
| Wu | Lishui | 幾粒 |
| Wu | Qingyuan | 多 |
| Xiang | Changsha | 好多 |
| Xiang | Xiangtan | 幾, 幾多 |
| Xiang | Shuangfeng | 好多, 幾多 |

##### Derived terms

* 俟河之清，人壽幾何 / 俟河之清，人寿几何
* 冇幾何 / 冇几何 (mou5 gei2 ho4-2)
* 春秋幾何 / 春秋几何
* 有幾何 / 有几何 (jau5 gei2 ho4-2)
* 無幾何 / 无几何
* 相去幾何 / 相去几何

#### Noun

幾何
* (mathematics) geometry [from 1607]

##### Derived terms

* 代數幾何 / 代数几何 (dàishù jǐhé)
* 平面幾何 / 平面几何 (píngmiàn jǐhé)
* 幾何光學 / 几何光学 (jǐhé guāngxué)
* 幾何圖形 / 几何图形 (jǐhé túxíng)
* 幾何學 / 几何学 (jǐhéxué)
* 幾何級數 / 几何级数 (jǐhé jíshù)
* 幾何體 / 几何体 (jǐhétǐ)
* 微分幾何 / 微分几何 (wēifēn jǐhé)
* 立體幾何 / 立体几何 (lìtǐ jǐhé)
* 解析幾何 / 解析几何 (jiěxī jǐhé)

#### Descendants

* → Japanese: 幾何(きか) (kika)
* → Korean: 기하(幾何) (giha)
* → Vietnamese: kỉ hà (幾何)

### Pronunciation 2

* Cantonese (Taishan, Wiktionary): gei$^2$ hau$^{4*}$
* Cantonese
** (Taishanese, Taicheng)
*** Wiktionary: gei$^2$ hau$^{4*}$
*** Sinological IPA : /kei⁵⁵ hau²¹⁻²¹⁵/

#### Adverb

幾何
* (Taishanese) how
* (Taishanese) why

##### Synonyms

| Variety | Location | Words |
| Classical Chinese | Classical Chinese | 如何, 何以, 若何 |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 如何, 怎樣 |
| Northeastern Mandarin | Beijing | 怎麼樣兒, 怎樣兒 |
| Northeastern Mandarin | Taiwan | 怎麼樣, 怎樣, 如何 |
| Northeastern Mandarin | Malaysia | 怎麼樣, 怎樣, 如何 |
| Northeastern Mandarin | Singapore | 怎麼樣, 怎樣, 如何 |
| Jilu Mandarin | Jinan | 怎麼樣 |
| Central Plains Mandarin | Xi'an | 咋樣兒 |
| Southwestern Mandarin | Chengdu | 咋個樣, 咋個樣子, 啷個樣, 啷個樣子 |
| Southwestern Mandarin | Wuhan | 麼樣, 麼樣子, 哪樣, 哪樣子 |
| Southwestern Mandarin | Guilin | 啷子樣 |
| Jianghuai Mandarin | Yangzhou | 怎們樣, 哪一個樣, 哪一個樣子 |
| Jianghuai Mandarin | Hefei | 怎樣 |
| Cantonese | Guangzhou | 點樣, 點 |
| Cantonese | Hong Kong | 點樣, 點 |
| Cantonese | Hong Kong (Kam Tin; Weitou) | 點樣 |
| Cantonese | Macau | 點樣, 點 |
| Cantonese | Guangzhou (Panyu) | 點 |
| Cantonese | Guangzhou (Zengcheng) | 點樣, 點樣做 |
| Cantonese | Foshan | 點 |
| Cantonese | Foshan (Shatou, Nanhai) | 點 |
| Cantonese | Foshan (Shunde) | 點, 點樣 |
| Cantonese | Foshan (Sanshui) | 點 |
| Cantonese | Foshan (Mingcheng, Gaoming) | 點 |
| Cantonese | Zhongshan (Shiqi) | 點子 |
| Cantonese | Zhongshan (Huancheng) | 點子 |
| Cantonese | Zhongshan (Nanlang) | 點子 |
| Cantonese | Zhongshan (Xiaolan) | 點 |
| Cantonese | Zhongshan (Dongsheng, Xiaolan) | 點, 點樣 |
| Cantonese | Zhongshan (Tanbei, Xiaolan) | 點, 點樣 |
| Cantonese | Zhongshan (Henglan) | 點, 點樣 |
| Cantonese | Zhongshan (Dongfeng) | 點, 點樣 |
| Cantonese | Zhongshan (Nantou) | 點, 點樣 |
| Cantonese | Zhongshan (Fusha) | 點, 點樣 |
| Cantonese | Zhongshan (Shalang) | 點, 點樣 |
| Cantonese | Zhongshan (Gangkou) | 點, 點樣 |
| Cantonese | Zhongshan (Huangpu) | 點, 點樣 |
| Cantonese | Zhongshan (Langwang, Minzhong) | 點, 點樣 |
| Cantonese | Zhongshan (Minzhong) | 點, 點樣 |
| Cantonese | Zhongshan (Banfu) | 點, 點樣 |
| Cantonese | Zhongshan (Tanzhou) | 點, 點樣 |
| Cantonese | Zhuhai (Qianshan, Xiangzhou) | 點樣 |
| Cantonese | Zhuhai (Shangheng, Doumen; Tanka) | 點 |
| Cantonese | Zhuhai (Doumen) | 點 |
| Cantonese | Taishan | 幾何 |
| Cantonese | Singapore (Guangfu) | 點樣, 點 |
| Gan | Nanchang | 啷樣, 啷 |
| Hakka | Meixian | 仰般, 仰仔 |
| Hakka | Miaoli (N. Sixian) | 仰般, 仰仔 |
| Hakka | Pingtung (Neipu; S. Sixian) | 仰仔 |
| Hakka | Hsinchu County (Zhudong; Hailu) | 仰般 |
| Hakka | Taichung (Dongshi; Dabu) | 仰脣, 仰 |
| Hakka | Hsinchu County (Qionglin; Raoping) | 仰般, 仰般形 |
| Hakka | Yunlin (Lunbei; Zhao'an) | 仰子 |
| Jin | Taiyuan | 咋, 咋底 |
| Northern Min | Jian'ou | 何如, 何如事 |
| Eastern Min | Fuzhou | 將樣, 蔣樣, 蔣其 |
| Southern Min | Xiamen | 按怎, 怎樣, 啥款 |
| Southern Min | Quanzhou | 障仔, 怎樣, 按怎, 啥款 |
| Southern Min | Zhangzhou | 按怎, 怎樣, 啥款 |
| Southern Min | Tainan | 按怎, 怎仔樣, 怎樣仔, 啥款 |
| Southern Min | Penang (Hokkien) | 按怎 |
| Southern Min | Singapore (Hokkien) | 按怎 |
| Southern Min | Manila (Hokkien) | 障仔, 怎樣 |
| Southern Min | Chaozhou | 在生樣, 乜生樣, 做呢 |
| Southern Min | Shantou | 在生 |
| Southern Min | Jieyang | 在生, 在生樣 |
| Southern Min | Haifeng | 做呢, 做呢樣 |
| Southern Min | Singapore (Teochew) | 做呢, 在生 |
| Zhongshan Min | Zhongshan (Longdu, Shaxi) | 哪, 哪樣 |
| Wu | Shanghai | 哪能, 哪能介, 哪能樣子 |
| Wu | Suzhou | 捺亨 |
| Wu | Wenzhou | 訾那, 訾那能 |
| Xiang | Changsha | 何是, 何裡 |
| Xiang | Shuangfeng | 麼家 |
| Variety | Location | Words |
| Classical Chinese | Classical Chinese | 何為, 何以, 何, 何故, 緣何, 胡, 奚, 曷, 胡為 |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 為什麼, 為何, 因何, 何以 |
| Northeastern Mandarin | Beijing | 為什麼, 幹嗎, 幹什麼 |
| Northeastern Mandarin | Taiwan | 為什麼 |
| Northeastern Mandarin | Harbin | 為啥 |
| Northeastern Mandarin | Malaysia | 為什麼, 做什麼, 做麼 |
| Northeastern Mandarin | Singapore | 為什麼, 做什麼, 做麼 |
| Jilu Mandarin | Tianjin | 為嘛 |
| Jilu Mandarin | Jinan | 為麼兒, 為麼, 幹麼兒, 為什麼 |
| Jiaoliao Mandarin | Yantai (Muping) | 為麼, 為麼個 |
| Central Plains Mandarin | Xi'an | 為啥, 因啥 |
| Central Plains Mandarin | Xining | 為啥 |
| Central Plains Mandarin | Xuzhou | 為啥, 擁啥, 擁什麼 |
| Lanyin Mandarin | Yinchuan | 為啥 |
| Lanyin Mandarin | Lanzhou | 為啥 |
| Lanyin Mandarin | Ürümqi | 為啥 |
| Southwestern Mandarin | Chengdu | 為啥子, 做啥子 |
| Southwestern Mandarin | Wuhan | 做麼事, 為麼事 |
| Southwestern Mandarin | Guiyang | 為哪樣, 為些哪樣 |
| Southwestern Mandarin | Guilin | 為什麼 |
| Southwestern Mandarin | Liuzhou | 為什麼 |
| Southwestern Mandarin | Xiangtan (Jiangnan Industries Group koine) | 為什麼 |
| Jianghuai Mandarin | Nanjing | 為什麼 |
| Jianghuai Mandarin | Yangzhou | 甚們事, 做事, 做啥, 為甚們 formal |
| Jianghuai Mandarin | Hefei | 怎搞, 怎搞的 |
| Cantonese | Guangzhou | 點解, 做乜, 做乜嘢, 為乜, 為乜為物, 做乜事幹, 因乜事幹, 因乜解究, 因乜緣故, 何解, 乜, 咩 |
| Cantonese | Hong Kong | 點解, 做乜, 做乜嘢, 做咩, 為乜, 為咩, 做乜事幹, 因乜事幹, 因乜解究, 因咩解究, 因乜緣故, 何解, 乜, 咩 |
| Cantonese | Hong Kong (Kam Tin; Weitou) | 做乜嘢 |
| Cantonese | Macau | 為乜嘢 |
| Cantonese | Guangzhou (Panyu) | 點解 |
| Cantonese | Guangzhou (Huashan, Huadu) | 整乜嘢 |
| Cantonese | Guangzhou (Zengcheng) | 做乜嘢 |
| Cantonese | Foshan | 點解 |
| Cantonese | Foshan (Shatou, Nanhai) | 點解 |
| Cantonese | Foshan (Shunde) | 為乜嘢 |
| Cantonese | Foshan (Mingcheng, Gaoming) | 因乜嘢, 點解 |
| Cantonese | Zhongshan (Shiqi) | 為乜嘢 |
| Cantonese | Zhuhai (Qianshan, Xiangzhou) | 為乜嘢 |
| Cantonese | Zhuhai (Shangheng, Doumen; Tanka) | 點解 |
| Cantonese | Zhuhai (Doumen) | 點解 |
| Cantonese | Jiangmen (Baisha) | 點解 |
| Cantonese | Taishan | 幾何, 幾解, 做乜, 為乜, 乜頭路 |
| Cantonese | Kaiping (Chikan) | 幾解 |
| Cantonese | Enping (Niujiang) | 做乜 |
| Cantonese | Dongguan | 點解, 做乜嘢, 做乜, 為乜嘢 |
| Cantonese | Shenzhen (Shajing, Bao'an) | 點解 |
| Cantonese | Shenzhen (Dapeng) | 點解 |
| Cantonese | Yangjiang | 為乜, 為乜事, 做乜, 做乜事, 做乜嘢 |
| Cantonese | Hepu (Lianzhou) | 為物底 |
| Cantonese | Qinzhou | 為乜嘢, 為乜 |
| Cantonese | Qinzhou (Xiniujiao) | 為乜底 |
| Cantonese | Beihai | 為乜嘢 |
| Cantonese | Beihai (Nankang) | 做乜嘢 |
| Cantonese | Beihai (Yingpan) | 為乜底 |
| Cantonese | Beihai (Qiaogang - Cô Tô) | 做乜嘢, 為乜 |
| Cantonese | Beihai (Qiaogang - Cát Bà) | 做乜嘢 |
| Cantonese | Fangchenggang (Fangcheng) | 做乜嘢, 為乜 |
| Cantonese | Kuala Lumpur (Guangfu) | 點解 |
| Cantonese | Singapore (Guangfu) | 點解 |
| Cantonese | Ho Chi Minh City (Guangfu) | 做乜嘢 |
| Cantonese | Móng Cái | 點解, 為乜 |
| Cantonese | Yangon (Taishan) | 幾解 |
| Gan | Nanchang | 為什哩 |
| Gan | Pingxiang | 為咋個, 為咋哩, 做咋個, 做咋哩, 何解 |
| Hakka | Meixian | 做麼個 |
| Hakka | Huizhou (Huicheng; Bendihua) | 做乜嘢, 做嘢 |
| Hakka | Dongguan (Qingxi) | 做麼個 |
| Hakka | Shenzhen (Shatoujiao) | 做麼個 |
| Hakka | Zhongshan (Wuguishan) | 仰解, 做乜嘢 |
| Hakka | Zhongshan (Nanlang Heshui) | 為乜嘢 |
| Hakka | Guangzhou (Lütian, Conghua) | 為麼個 |
| Hakka | Miaoli (N. Sixian) | 做麼個 |
| Hakka | Pingtung (Neipu; S. Sixian) | 做麼個 |
| Hakka | Hsinchu County (Zhudong; Hailu) | 做麼個 |
| Hakka | Taichung (Dongshi; Dabu) | 做麼個 |
| Hakka | Hsinchu County (Qionglin; Raoping) | 做麼個 |
| Hakka | Yunlin (Lunbei; Zhao'an) | 做麼個 |
| Hakka | Hong Kong | 做麼個 |
| Hakka | Kuching (Hepo) | 做乜個 |
| Jin | Taiyuan | 為甚, 因為甚, 幹什 |
| Jin | Xinzhou | 𠰻們 |
| Northern Min | Jian'ou | 為孰事, 做孰事 |
| Eastern Min | Fuzhou | 蔣其, 蔣講, 做什乇, 做什名, 幹乜勢, 傒勢 |
| Eastern Min | Fuzhou (Changle) | 傒勢 |
| Eastern Min | Fuqing | 介計 |
| Eastern Min | Yongtai | 蔣其 |
| Eastern Min | Gutian | 做什乇 |
| Eastern Min | Fu'an | 做乜乇 |
| Eastern Min | Ningde | 做乇 |
| Eastern Min | Shouning | 做呢乇 |
| Eastern Min | Zhouning | 做乜乇 |
| Eastern Min | Fuding | 做哪乇 |
| Eastern Min | Matsu | 為什乇, 蔣其, 蔣講, 做什乇, 傒勢 |
| Southern Min | Xiamen | 為什物, 按怎, 物代, 敢咧, 創什物 |
| Southern Min | Quanzhou | 按怎, 物代 |
| Southern Min | Jinjiang | 為啥物 |
| Southern Min | Zhangzhou | 按怎 |
| Southern Min | Zhao'an | 為甚物 |
| Southern Min | Dongshan | 為甚物 |
| Southern Min | Taipei | 為啥物, 是按怎 |
| Southern Min | Penang (Hokkien) | 何物事, 做物事, 做物 |
| Southern Min | Singapore (Hokkien) | 按怎 |
| Southern Min | Manila (Hokkien) | 敢哪, 敢哪誌 |
| Southern Min | Chaozhou | 做呢 |
| Southern Min | Shantou | 做呢 |
| Southern Min | Shantou (Chaoyang) | 做呢 |
| Southern Min | Singapore (Teochew) | 做呢 |
| Southern Min | Leizhou | 作乜, 因乜 |
| Southern Min | Wenchang | 作乜, 因乜, 怎作 |
| Southern Min | Haikou | 作乜, 作個乜, 作乜物, 因乜, 因個乜 |
| Southern Min | Singapore (Hainanese) | 作乜 |
| Zhongshan Min | Zhongshan (Longdu, Shaxi) | 為乜嘢 |
| Southern Pinghua | Nanning (Tingzi) | 做門, 做哪門, 為哪門 |
| Waxiang | Guzhang (Gaofeng) | 為什個 |
| Wu | Shanghai | 啥體, 為啥, 做啥, 啥講究, 為啥體, 啥個講究, 啥道理, 為啥道理, 啥個路道, 啥個緣故 |
| Wu | Shanghai (Chongming) | 為何, 做何 |
| Wu | Suzhou | 為啥, 為點啥, 做啥, 啥體, 為啥體 |
| Wu | Danyang | 為點高, 做點高 |
| Wu | Hangzhou | 為啥 |
| Wu | Wenzhou | 妝乜, 為何呢, 為乜事幹 |
| Wu | Jinhua | 為淡事幹, 為待西 |
| Xiang | Changsha | 為麼子, 何解 |
| Xiang | Xiangtan | 奚解 |
| Xiang | Loudi | 嗎介 |
| Xiang | Shuangfeng | 為麼子, 做麼子 |

### References
## Japanese
### Etymology 1

Kanji in this term :
| 幾 | 何 |
| き Grade: S | か Grade: 2 |
| kan'on ||
Shortening of 幾何学 (kikagaku, “geometry”).
First attested in the early Meiji period, in a text from 1886.

#### Pronunciation

* (Tokyo) きか [kíꜜkà] (Atamadaka – [1])
* (Tokyo) きか [kìkáꜜ] (Odaka –)
* IPA: [kʲika̠]

#### Noun

幾(き)何(か) • (kika)
* [1886] (mathematics, colloquial) Short for 幾何学 (kikagaku): geometry

##### Derived terms

* 幾(き)何(か)異(い)性(せい) (kika isei)
* 幾(き)何(か)画(が)法(ほう) (kika gahō)
* 幾(き)何(か)級(きゅう)数(すう) (kika kyūsū, “geometric series, geometric progression”)
* 幾(き)何(か)原(げん)本(ぽん) (Kika Genpon)
* 幾(き)何(か)光(こう)学(がく) (kikakōgaku)
* 幾(き)何(か)公(こう)理(り) (kika kōri)
* 幾(き)何(か)数(すう)列(れつ) (kika sūretsu)
* 幾(き)何(か)中(ちゅう)項(こう) (kika chūkō)
* 幾(き)何(か)平(へい)均(きん) (kika heikin)
* 幾(き)何(か)模(も)様(よう) (kika moyō)
* 位(い)相(そう)幾(き)何(か) (isō kika, “topology”)
* 代(だい)数(すう)幾(き)何(か) (daisū kika, “algebraic geometry”)
* 直(ちょっ)観(かん)幾(き)何(か) (chokkan kika)
* 微(び)分(ぶん)幾(き)何(か) (bibun kika, “differential geometry”)
* ユークリッド幾(き)何(か) (Yūkuriddo kika, “Euclidean geometry”)
* リーマン幾(き)何(か) (Rīman kika, “Riemannian geometry”)
* 論(ろん)証(しょう)幾(き)何(か) (ronshō kika)

### Etymology 2

Kanji in this term :
| 幾 | 何 |
| いく Grade: S | ばく Grade: 2 |
| kun'yomi | irregular |
For pronunciation and definitions of 幾何 – see the following entry. :
| 【幾許いくばく】 | [adverb] how much, how many [adverb] (usually followed by か (ka)), few, a little bit [adverb] (chiefly in the negative) a little bit, not much Alternative spelling 幾ばく |
| 【幾許こきし】 | [adverb] many, a lot Alternative spellings 幾ばく, こきだ, ここだ, ここば, ここら |
| 【幾許いくだ】 | [adverb] (chiefly in the negative) a little bit, not much Alternative spelling 幾ばく |
(This term, 幾何, is an alternative spelling of the above term.) :

#### Usage notes

The kanji spelling is an orthographic borrowing from Chinese 幾何 / 几何 (jǐhé).

### References

* 1 2 Shōgaku Tosho (1988) 国語大辞典（新装版） [Unabridged Dictionary of Japanese (Revised Edition)] (in Japanese), Tōkyō: Shogakukan, →ISBN
* 1 2 3 Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN

## Vietnamese

chữ Hán Nôm in this term :
| 幾 | 何 |

### Adjective

幾何
* chữ Hán form of kỉ hà (“geometric”).