Question

Which statement could be made based on the diagram below?

A) m∠3 + m∠6 = 90
B) ∠3 = ∠6
C) ∠3 = ∠5
D) m∠4 + m∠5 = 180

Answer 1

A) angle 3 plus angle 6 = 90°

Explanation:

just think about it : to the left of m at the intersection with n is 90°. so, to the right it must be 90° too.

because one side of a line represents always 180° for all angles around a single point.