1. x = 6
ED = 10
DB = 10
EB = 20
Warm Up

2. Section 1.5 Describe Angle Pair Relationships
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Two angles are complementary angles if the sum of their measures is 90 degrees.
Each angle is the complement of the other.
Two angles are supplementary angles if the sum of the measures is 180 degrees.
Each angle is the supplement of the other.

3. EXAMPLE:
a. Given that <1 is a complement of <2 and m<1 = 68 degrees, find m<2.
b. Given that <3 is a supplement of <4 and m<4 = 56 degrees, find the m<3.

4. 1.5 Describe Angle Pair Relationships
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Two adjacent angles are a linear pair if their non-common sides are opposite rays. The angles in a linear pair are always supplementary.
Two angles are vertical angles if their sides form two pairs of opposite rays. And they are congruent.

5. 1 2 3 4

6. 1.5 Describe Angle Pair Relationships
Complementary angles and supplementary angles can be adjacent angles or nonadjacent angles.
Adjacent angles are two angles that share a common vertex and side, but have no common interior points. (Write that into your foldable)
1.5 Describe Angle Pair Relationships

7. Look at your notes

8. Linear Pair
Adjacent