1. Types of Angles & Their Relationships

2. Vertical Angles
• Vertical angles are pairs of opposite angles formed by two intersecting lines. They are congruent. 1 4 2 3

3. Adjacent Angles
Adjacent angles have a common ray. They are NEXT to each other 1 2 4 3
To get from one adjacent angle to another,
jump over a side

4. Supplementary Angles Two supplementary angles form a 180° angle.
The measures of two supplementary angles have a sum of 180° 1
These angles are supplements and adjacent. 4 2 3
These are supplements
Their measures add to 180° 50
130
= 180

5. Complementary Angles • Two complementary angles form a 90° angle.
are adjacent and complementary 6 5 15 75
These angles are complementary
Their measures have a sum of 90°
= 90

7. **Find the measure of the supplement of an angle with the given measure.
7) 38 ________________ 8) 152 _______________________
**Find the measure of the complement of an angle with the given measure.
9) 25 _______________ 10) 64_______________________

8. **Find the measure of 1

9. Find the measure of <1