Dumba (Pyramid)- iri shoko rinotoredzera kubva pachiumbwa chinoonekwa kana tichitema mashanga echigabe nokuamisa kuita matumba. Tiri muchidzidzo Pimanyika kune marudzi ematumba anodanwa zvakasiyana zvichienderana nechiumbwa chiri pahwaro hwedumba racho. Sokuti kune: dumba regonyonhanhatu (hexagonal pyramid); kwoita dumba reSkweya (square based pyramid); dumba regonyonhatu (triangular pyramid); dumba regonyoina tsazamakonyo (rectangular pyramid), zvichingodaro.