Question

Assessment items Item 1 Angle A and angle B are supplementary angles. What must be true about the angles?

A The sum of the angles is 180°.
B The sum of the angles is 90°.
C The angles share a common side and vertex.
D The angles were formed by two intersecting lines and are on opposite sides.

Answer 1

Supplementary angles are two angles that when added together equal 180 degrees.

A The sum of the angles is 180°.