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Slide 1: GEOMETRY Angle Relationships
Slide 2: A B E D C (Vertically opposite angles are equal).
Slide 3: A A D D E E C C F G G H F H B B ADE = AGH A pair of corresponding angles. (Corresponding angles on CE parallel to FH are equal).
Slide 4: A A D D E E C C F G G H F H B B CDB = AGH A pair of alternate angles. (Alternate angles on CE parallel to FH are equal).
Slide 5: A A D D E E C C F G G H F H B B EDB + AGH = 180 A pair of cointerior angles. (Cointerior angles on CE parallel to FH add to 180°).
Slide 6: Tests for Parallel Lines A pair of lines are parallel if: • Alternate angles are equal • Corresponding angles are equal • Cointerior angles add to 180°
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