Question

What is the m∠ADC?

A)57.5
B)65
C)90
D)115

Answer 1

180 - 115 = 65 and so the other two angles are each half of 180 - 65 = 115, so each is
\[\frac{115}{2}\]

Answer 2

ACD=180-115=25 degrees
Let x= ADC
2 x + 25 = 180 (isosceles triangle)
x = 155/2=77.5 degrees

Answer 3

i think you have a math error there, 180-115 is not 25

Answer 4

I think your are right. Haste makes waste.

Answer 5

satellite73's solution is correct.