Question

Why is angle 1 congruent with angle C in the diagram

A. They interior angles to the triangle
B. They are corresponding angles
C. They are exterior angels to the triangle
D. They are vertical angles

Please help me with this answer

Answer 1

They are vertical angles.

Explanation:

Angle 1 would be congruent with C because they are vertical.

Answer 2

They are vertical angles

Explanation:

They are opposite each other