Question

Find the value of unknown x in the following figure:

Answer 1

Step-by-step explanation:

<PQR = 40°

<QPR = 90°

<Q + <P + <R = 180°( sum of angle of triangle is 180° )

40° + 90° + x = 180°

130° + x = 180°

x = (180 - 130)°

x = 50°

Answer 2

By using angle sum property of triangle.

∠P + ∠Q + ∠R = 180°

90° + 40° + x = 180°

x = 180° - 130°

x = 50°

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