Triangle Sum and Exterior Angles Theorems Worksheet 1. Find the measure of angle 1. 2. Solve for x. 40 62- 90 N . Solve for x. 32.x + 4 4. Find the measure of angle A. 1+ 59 20' 4 + 6x 840 * + 51 5. Find the measure of angle 1. 6. Find the measure of angle E and F. X D 50 1 150 65- W 3x + 19 F E 7. Find the measure of angles a and b. 8. Find the measure of angle A. 810 a 1170 8x + 4 9x + 1 9. Use the properties of parallel lines and the 10. Use the properties of parallel lines and the Triangle Sum Theorem to solve for x. Triangle Sum Theorem to solve for x. 9.x - 2 1+ 74 37+ x 40 1 10 730