Tutorial World Primary 4
Name:_________________________ Date:_______________


Angles, Perpendicular & Parallel Lines (5.1)

Solve the problems below.
1. Within the shaded region, there are:

(a) ____________ acute angles.

(b) ____________ obtuse angles.

(c) ____________ reflex angles.

2. On all the surfaces of a cube, how many right angles are there?

3. Inside the figure, there are:

(a) ____________ acute angles.

(b) ____________ right angles.

(c) ____________ set of parallel lines.

4. Which 2 lines are parallel to one another?

5.
Which 2 angles are equal?

6. Inside the figure, there are:

(a) ____________ acute angles.

(b) ____________ right angles.

(c) ____________ set of parallel lines.

7. (a) How many right angles are there?
(b) Which lines are parallel to one another?

8. In the figure, there are:

(a) ____________ acute angles.

(b) ____________ right angles.

(c) Which sets of lines are parallel?.


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