Choose the correct angle size from the list below only once to complete each statement in

questions 16 – 19.

I: 16(8-4) x 90°
II: 12(12-8) x 45°
III: (3-2) x 180
IV: (8-4) x 90°

16. The sum of the interior angles of a triangle

A. I B. II C. III D. IV

17. Each interior angle in an equilateral triangle

A. I B. II C. III D. IV

18. The largest angle in a right-angled triangle

A. III B. II C. IV D. I

19. The sum of the interior angles of any quadrilateral

A. I B. II C. III D. IV

20. AB, the diameter of the given semi-circle ABC, is 20 m.

Use =3.14 to calculate the perimeter of the figure correct to two decimal places.

A. 62.80cm B. 62.82cm C. 62.86cm D. 63cm