Circles, angles and nets

Worksheet: Circles, angles and nets

Name:Class:

Answer the questions.

1. What do we call the distance all the way around a circle?
   a) Areab) Circumferencec) Diameterd) Radius
2. What is the name of a straight line from the centre of a circle to its edge?
   a) Arcb) Circumferencec) Diameterd) Radius
3. The diameter of a circle passes through its centre.
   a) Trueb) False
4. A circle has a radius of 7 cm. What is its diameter?
   a) 14 cmb) 21 cmc) 3.5 cmd) 49 cm
5. A circle has a diameter of 18 m. What is its radius in metres?
6. Two angles in a triangle are 60° and 80°. What is the third angle?
   a) 140°b) 30°c) 40°d) 50°
7. A triangle can have angles of 90°, 60° and 40°.
   a) Trueb) False
8. A triangle has two equal angles of 45°. What is its third angle?
9. What do the four angles in any quadrilateral add up to?
   a) 180°b) 270°c) 360°d) 90°
10. A quadrilateral has angles 90°, 120° and 70°. What is the fourth angle?
    a) 100°b) 280°c) 60°d) 80°
11. A rectangle has four equal angles. How many degrees is each one?
12. Three angles of a quadrilateral are 110°, 85° and 75°. What is the fourth?
    a) 100°b) 270°c) 80°d) 90°
13. How many square faces does the net of a cube have?
    a) 4b) 5c) 6d) 8
14. Which solid can be made by folding a net of 2 triangles and 3 rectangles?
    a) Cubeb) Cuboidc) Square pyramidd) Triangular prism
15. A net of a cuboid can have 6 rectangles.
    a) Trueb) False
16. Diameter 10 cm, circumference about 31 cm. Circumference ÷ diameter is about…?
    a) About 10b) About 2c) About 3d) About 5