1-5 Angle Relationships

Students will learn how to identify and use special pairs of angles, namely, supplementary, complementary, and congruent (have the same measure).

Type of Angle Definition Example

Adjacent Angles

Vertical Angles

Linear Pair

ComplementaryAngles

Supplementary Angles

Adjacent AnglesTwo angles in the same plane.Must have a common vertex and common side.No common interior points.

<ABC and <CBD are adjacent.

<ABC and <ABD

<ABC and <CBD

Adjacent or not?

Linear PairPair of adjacent angles with noncommon sides that are opposite rays.

Linear Pair or not?

Name two angles that form a linear pair.

Perpendicular Lines-Intersect to form four right angles-Intersect to form congruent adjacent angles

1-5 Pg. 45#6-8, 12, 18-22, 29, 30, 33, 36, 41, 42, 45, 50