Question

@jim_thompson5910
Could you check my answer please?

Answer 1

I got option D. 108, 54, and 18.

CGD = 108°,

angle GCD = 54°,

and angle GDC = 18°

Answer 2

(So it may show questions marks next to the #'s, if you refresh the page you will see them turn into the proper symbol, which is degrees . )
@jim_thompson5910

Answer 3

yeah, BCA = 90 - 36 = 54 degrees, so GCD = 54 degrees

and you do a bit more work to show that GDC = 18. You need 2 angles to be congruent to have an isosceles triangle

Answer 4

isosceles triangle
there should be two equal angles
and all angles should be equal to 180

Answer 5

Thank you for answering & checking ! :)