Geometry Problems, Online Education

Geometry Problem 43 with Solution: Angles, Triangle, Isosceles, Quadrilateral, Congruence, Double Angle, 60 Degrees

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In the figure, AB = BC = CD, and the measure of angle C is double the measure of angle A. Prove that x = 60°. See also problems 4 and 42.
 


 
 

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Art and typography of problem 43.

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