# Geometry: Angles and Parallel Lines

In this worksheet, students work out the values of angles in diagrams with parallel lines.

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   2D Shapes: Circles, Angles and Bearings

Difficulty level:

### QUESTION 1 of 10

In this worksheet, you will need to know that certain angles are equal to each other when you draw a line across two parallel lines.

Look at the diagram below to see which of the 8 angles are equal to each other.  All the "a" angles are equal and all the "b" angles are equal.

Remember also that aº + bº = 180º as they are the angles on a straight line.

Also remember that the angles in a triangle add to 180º.

Look at this diagram and write down the value of a.

Look at this diagram and write down the value of b.

Look at this diagram and write down the value of a.

Look at this diagram and write down the value of b.

Look at this diagram and write down the value of a.

Look at this diagram and write down the value of b.

Look at this diagram and write down the value of a.

Look at this diagram and write down the value of b.

Look at this diagram and write down the value of a.

Look at this diagram and write down the value of b.

• Question 1

Look at this diagram and write down the value of a.

110
• Question 2

Look at this diagram and write down the value of b.

70
• Question 3

Look at this diagram and write down the value of a.

125
• Question 4

Look at this diagram and write down the value of b.

55
• Question 5

Look at this diagram and write down the value of a.

75
• Question 6

Look at this diagram and write down the value of b.

105
• Question 7

Look at this diagram and write down the value of a.

65
• Question 8

Look at this diagram and write down the value of b.

115
• Question 9

Look at this diagram and write down the value of a.

48
• Question 10

Look at this diagram and write down the value of b.

132
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