## Types of Angles

## Opening

# Types of Angles

Discuss the following with your classmates.

- ∠
*ABD*and ∠*CBD*are*adjacent angles.*Adjacent angles share a vertex and a side. - ∠
*ABD*and ∠*CBD*are also*supplementary angles*. The measures of supplementary angles add up to 180°. - ∠
*ABC*is a straight angle.