In the figure, if congruent right triangles $$ ABD $$ and $$ DCA $$ share leg $$ AD $$ , then $$ \alpha = $$

Question

In the figure, if congruent right triangles $$ ABD $$ and $$ DCA $$ share leg $$ AD $$ , then $$ \alpha  = $$

Uniteasy Admin · Accepted Answer

Since one of the internal angles in the right triangle is $$60\degree$$, the other one is $$30\degree$$.which yields equilateral triangles as highlighted. $$\alpha$$  is the double of $$60\degree$$

D is the choice

Multiple Choice Question (MCQ)

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