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ANGLES

1. Interior angles

• All angles inside the parallel lines.

2. Exterior angles

• All angles outside the parallel lines.

3. Alternate exterior angles

• Pair of non-adjacent exterior angles on opposite sides of a transversal. These 2 angles are congruent.

4. Alternate interior angles

• Pair of non-adjacent interior angles on opposite sides of a transversal. These 2 angles are congruent.

5. Same side interior angles

• Interior angles on the same side of a transversal. These angles are supplementary.

6. Same side exterior angles

• Exterior angles on the same side of a transversal. These angles are supplementary.

7. Corresponding angles

• Pair of non-adjacent exterior and interior angles on the same side of transversal. These 2 angles are congruent.

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