10 questions🇬🇧English
📐 Angles in Parallel Lines – Year 9
Maths · Year 9 (KS3) — practise finding alternate, corresponding and co-interior angles and giving reasons
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Questions
What do angles on a straight line add up to?

180°
360°
270°
90°
20s
Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite it?

20°
70°
110°
290°
20s
A transversal crosses two parallel lines. Which pair of angles forms a Z shape?

Corresponding angles
Co-interior angles
Alternate angles
Vertically opposite angles
20s
On parallel lines, angle p and a 48° angle form an F shape. Which reason correctly explains why p = 48°?

Alternate angles are equal
Vertically opposite angles are equal
Co-interior angles add up to 180°
Corresponding angles are equal
30s
Two co-interior angles lie between a pair of parallel lines. One of them is 65°. What is the other angle?

295°
115°
65°
25°
20s
Angle a is 130°. Angle b is on a straight line with a, and angle c is alternate to b on parallel lines. What is angle c?

230°
40°
130°
50°
30s
Two angles on a straight line are (x + 40)° and (2x + 20)°. What is the value of x?

40
20
80
60
30s
Two co-interior angles on parallel lines are 2x° and (3x + 30)°. What is the value of x?

30
150
42
36
60s
Two alternate angles on parallel lines are (4x − 20)° and (2x + 30)°. What is the value of x?

50
25
5
35
60s
Two lines are crossed by a transversal. A pair of co-interior angles between them are 100° and 85°. What can you conclude?

The two lines are parallel
The transversal is perpendicular
The two lines are not parallel
The two lines are perpendicular
30s