✋Hordhac
Sifooyinka murabba'aha (prisms)
Salaan dhamaan. Casharkaan waxaan si qoto dheer u eegi doonaa sifooyinka qaababka saddex-geesoodka ah ee loo yaqaan 'prism' (prism), sida loo magacaabo iyo noocyada kala duwan ee laga yaabo inaadan hore u arag. Waxaad horey uga fahantay qaababka joomatari ee sallaxa ah sida saddexagalka iyo leydiga, iyo sidoo kale sida loo xisaabiyo bedka iyo mugga qaababka sallaxa ah.
Natiijada casharka
Waxaan qirayaa in dhammaan murabba'aha (prisms) ay leeyihiin laba weji isku mid ah oo geeso badan leh oo isbarbar socda (saldhigyada), iyadoo wejiyada kale ay yihiin isbarbar yaal (parallelograms) oo isku xira geesaha u dhigma ee saldhigyada.