1. 4-3: Transversals and Corresponding Angles

2. C ORRESPONDING A NGLES : An interior and exterior angle formed by two lines and a transversal, where both angles lie on the same side as the transversal Angles 7 & 8 below are corresponding angles (both are in the upper-right corner)

3. 4-3: Transversals and Corresponding Angles Example: Name a pair of corresponding angles  1 &  5  2 &  6  4 &  7  3 &  8

4. 4-3: Transversals and Corresponding Angles P OSTULATE 4-1: If two parallel lines are cut by a transversal, then each pair of corresponding angles is congruent.

5. 4-3: Transversals and Corresponding Angles Which figures are congruent to 1? Explain your answers.  7(vertical angles)  3(corresponding angles)  5(vertical with  3)  9(corresponding angles)  11(corresponding with  9)  13(vertical with  11)  15(vertical with  9)

6. 4-3: Transversals and Corresponding Angles Find the measure of each numbered angle. 11 12 13 14 15 = 124˚ = 124˚ = 98˚ = 98˚ = 82˚

7. 4-3: Transversals and Corresponding Angles Assignment: Worksheet #4-3