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Understanding Angle Relationships in Geometry

Learn about supplementary angles (add up to 180 degrees) and complementary angles (add up to 90 degrees), as well as vertical angles, parallel lines, and corresponding, alternate interior, and exterior angles in geometry.

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Understanding Angle Relationships in Geometry

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  1. SUPPLEMENTARY ANGLES

  2. 2-Angles that add up to 180 degrees

  3. COMPLEMENTARY ANGLES

  4. 2-Angles that add up to 90 degrees.

  5. VERTICAL ANGLES

  6. VERTICAL ANGLES ARE CONGRUENT <4=<2 AND <1=<3

  7. PARALLEL LINES

  8. <1=<5 Corresp.<s <3=<6 Alt. int. <s <3=<7 Corresp. <s <4=<5 Alt. int. <s <2=<6 Corresp.<s <2=<7 Alt. Ext. <s <4=<8 Corresp.<s <1=<8 Alt. Ext. <s <3 + <5= 180 Same side int. <s <4 + <6= 180 Same side int. <s

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