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Intersecting Lines and Angle Measures
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- Lines are always straight and never ending
- When two or more lines cross each other, they are intersecting lines
- An angle has two sides and a vertex
- The degree of the angle is the angle measure
- Acute angles are less than 90 degrees
- Right angles are 90 degrees
- Obtuse angles are greater than 90 degrees
- Vertical angles: Two opposite angles formed by intersecting lines
- Adjacent angles: Angles next to each other and have a common vertex and side
- Complementary angles: Two angles that add up to 90 degrees
- Supplementary angles: Two angles that add up to 180 degrees
Intersecting Lines and Angle Measures
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