Question

Two stright line intersect each other in such a way that one of the angle formed measure 90, show that each remaining angle measure 90.

Answer 1

Answer:

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Step-by-step explanation:

∠AOC = 90°

We know that,the vertical angles which are created by the intersection of two straight lines,are equal. In this case, ∠BOC and ∠AOD are vertical angles. And, ∠AOC and ∠BOD are vertical angles