Qardhaas Waa mid kamid ah joometeriya afar xagal leh, afartiisa dhinacna ay isla egyihiiin, waxa uuna u egyahay laba saddax-xagal oo kala jeeda oo hal sal ka dhaxeeya Bedka ama Badka Qardhaas waxaa loo xisaabi karaa afar qaab: Barbaroolayaasha oo dhan, Waxa ay ka samaysmaan Salka a {\displaystyle a} , Waxa ay la jaan qaadeeysaa dhinacyada iyo jooga h {\displaystyle h} : A = a ⋅ h , {\displaystyle A=a\cdot h,} Adigoo dhexroorka dheer ku dhifta d 1 {\displaystyle d_{1}} Dhexroorka gaaban d 2 {\displaystyle d_{2}} Oo aad markaas uqaybiso A C ¯ ⋅ S B ¯ 2 = A C ¯ ⋅ B D ¯ / 2 2 = A C ¯ ⋅ B D ¯ 4