Question

Derek determines that triangle CGD is an isosceles triangle.

Which statement best describes Derek’s conclusion?

It is correct because angle CGD = 108°, angle GCD = 36°, and angle GDC = 36°.

It is correct because angle CGD = 72°, angle GCD = 72°, and angle GDC = 36°.

It is incorrect because angle CGD = 72°, angle GCD = 74°, and angle GDC = 34°.

It is incorrect because angle CGD = 108°, angle GCD = 54°, and angle GDC = 18°

Answer 1

It is incorrect because angle CGD = 108°, angle GCD = 54°, and angle GDC = 18°

Answer 2

This is the true description