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Here's the problem I'm stuck with. ABCDE is a regular pentagon. Point A is at the top and C and D are the two points at the bottom forming the commonly seen isosceles trianglein the midle. It then asks to find angle CAD (angle A). Since no lengths or other angles are given, can't i just make a line parallel to CD connecting with A.Then i could just do 180 / 5 to find angle A. i'm not sure if thats the way to do it. If anybody could help, thanks a lot.

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# Help on Angular Proof

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