The measure of two angles in a triangle are shown in the diagram.

Question

the top of the triangle shows 100 and the bottom left shows X

Which equation can be used to find the value of x?
Responses
A 2(100) + x = 1802(100) + x = 180
B 100 + 2x = 360100 + 2 x = 360
C 100 + 2x = 180100 + 2 x = 180
D 2(100) + x = 360

Answer 1

C 100 + 2x = 180