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# Angle Relationships

Angle Relationships. Section 1-5. Adjacent angles. Angles in the same plane that have a common vertex and a common side, but no common interior points. 1. 2. Vertical angles. two nonadjacent angles formed by two intersecting lines Vertical angles are congruent. 4. 3. Linear pair.

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## Angle Relationships

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### Presentation Transcript

1. Angle Relationships Section 1-5

2. Adjacent angles • Angles in the same plane that have a common vertex and a common side, but no common interior points. 1 2

3. Vertical angles • two nonadjacent angles formed by two intersecting lines • Vertical angles are congruent. 4 3

4. Linear pair • adjacent angles whose noncommon sides are opposite rays • The sum of the measures of the angles in a linear pair is 180. 5 6

5. Perpendicular lines • special intersecting lines that form right angles • Perpendicular lines intersect to form 4 right angles.

6. Supplementary angles – 2 angles whose measures have a sum of 180 • Complementary angles – 2 angles whose measures have a sum of 90

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