Finding Unknown Angles on Lines and Right Angles

Questions

1. MultiChoice

   Angle A and Angle B make up a 90 degree angle. If Angle A = 60 degrees, what is Angle B?

2. MultiChoice

   Angle C and Angle D make up a 90 degree angle. If Angle C = 20 degrees, what is Angle D?

3. MultiChoice

   Angle X and Angle Y sit on a straight line (180 degrees). If Angle X = 80 degrees, what is Angle Y?

4. MultiChoice

   Angle M and Angle N sit on a straight line (180 degrees). If Angle M = 30 degrees, what is Angle N?

5. MultiChoice

   Two angles form a right angle (90 degrees). One angle is 75 degrees. What is the other angle?

6. MultiChoice

   Two angles form a straight line (180 degrees). One angle is 65 degrees. What is the other angle?

7. MultiChoice

   Three angles form a right angle (90 degrees). Two of them are 30 degrees and 40 degrees. What is the third?

8. MultiChoice

   Three angles form a straight line (180 degrees). Two of them are 50 degrees and 80 degrees. What is the third?

9. MultiChoice

   What do we call two angles whose measures add up to 90 degrees?

10. MultiChoice

    What do we call two angles whose measures add up to 180 degrees?

11. MultiChoice

    If angle A is complementary to 35 degrees, what is the measure of angle A?

12. MultiChoice

    If angle B is supplementary to 110 degrees, what is the measure of angle B?