Предмет: Геометрия, автор: mafloypersik

4. (1,5 б) на рисунку AO = CO, BO = DO, AB = 7 см. Знайдіть відповідь CD, поясніть. малюнок в фотке

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Ответы

Автор ответа: liftec74

8

Ответ: CD=7

Объяснение:

∡AOB=∡COD - вертикальные.

OD=OB ; OA=OC => ΔAOB=ΔCOD (сторона-угол-сторона)

=> DC=BA=7

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