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Four roads meet at the centre of a roundabout. The angles between them are 85°, 95°, $2 z$ and $3 z$ . What is the largest angle?

Class 7Angles Around a PointLines and Angles

A108°
B72°
C180°
D95°

Step-by-Step Solution

85 + 95 + 5 z = 360

, so

5 z = 180

and

z = 36

. Then

2 z = 72

° and

3 z = 108

°. The largest angle is 108°.

Answer: A) 108°

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