Question

What are vertical angles? If ZA and B are vertical angles, whattrue about their measures?

Answer 1

We saw that two angles are vertical if they share the same vertex.

In this case, we have the following angles A and B:

We also have the property that if angle A and angle B are vertical, then:

`m\measuredangle A=m\measuredangle B`

therefore, the measure of angle A is equal to the measure of angle B