1. In the following figure, the measure of ∠A is

2. In the following figure, the measure of ∠A is

3. In the following figure, m || QR. Then, the measure of ∠QPR is

4. In the following figure, find ∠ x and ∠ y, if ∠x - ∠y - 10°

5. In the following figure, find ∠ B.

6. In the following figure, ∆ ABC is an equilateral triangle. Find ∠x.

7. In the following figure, one angle of triangle ABC is 40°. If the difference of the other two angles is 30°, find the larger of the other two angles.

8. In the following figure, find

9. In the following figure, find x if BA || CE.

10. Find the value of the unknown interior angle x in the following figure: