Math 8 · Unit 5: Angles and constructions · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. Corresponding angles on parallel lines are …

   • add to 90°
   • equal
   • add to 360°
   • add to 180°
   Check

2. 2. Alternate angles on parallel lines are …

   • add to 180°
   • different
   • add to 90°
   • equal
   Check

3. 3. Co-interior angles on parallel lines …

   • are equal
   • add to 180°
   • add to 90°
   • add to 360°
   Check

4. 4. The two lines with arrows are parallel. What is angle x?

   • 295°
   • 115°
   • 65°
   • 25°
   Check

5. 5. The two lines with arrows are parallel. What is angle x?

   • 115°
   • 125°
   • 65°
   • 25°
   Check

6. 6. The two lines with arrows are parallel. What is angle x?

   • 18°
   • 72°
   • 108°
   • 252°
   Check

7. 7. Which shape do alternate angles make?

   • Z
   • F
   • C
   • X
   Check

8. 8. Vertically opposite angles are …

   • always 90°
   • equal
   • add to 180°
   • add to 90°
   Check

9. 9. Two co-interior angles are x and 3x. What is x?

   • 90°
   • 30°
   • 60°
   • 45°
   Check

10. 10. Angle a = 72°. b is on a straight line with a. What is b?

    • 288°
    • 108°
    • 18°
    • 72°
    Check

11. 11. Can co-interior angles both be 100°?

    • Yes
    • No
    Check

12. 12. If alternate angles are equal, the lines are …

    • curved
    • perpendicular
    • parallel
    • crossing
    Check

13. 13. One angle at a crossing of parallel lines is 40°. Which angle could NOT appear?

    • 50°
    • 140°
    • 40°
    Check

14. 14. Corresponding angles are 3y + 10 and 70. What is y?

    • 26.7
    • 20
    • 30
    • 60
    Check

15. 15. Parallel lines are marked on diagrams with …

    • squares
    • crosses
    • dots
    • arrows
    Check