Question

Find the unknown angles in the following figures : ​

Answer 1

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Answer 2

y = 20° ( vertically opposite angles )

In ∆PQR ,

Angle P+Q+R = 180°

x + 90° + 20° = 180°

x = 180 - 110

x = 70

angle PRQ + u + y + v = 360°

20° + 2u + 20 = 360 [ u = v, vertically opposite angles]

2u = 320

u = 160

so, v = 160

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