Question

The angles of a quadrilateral are 75°159° and 75° find fourth angle ​

Answer 1

Step-by-step explanation:

We know that, sum of all the 1 angles of a quadrilateral is 360°. Hence, the fourth angle of a quadrilateral is 120°.

Answer 2

Given:-

∠A = 75°, ∠B = 90° and ∠C = 75°

We know that, sum of all the angles of a quadrilateral is 360°.

∠A+ ∠B + ∠C + ∠D = 360°

⇒ 75° + 90°+ 75°+ ∠D = 360°

∠D = 360° – (75° + 90° + 75°)

= 360° -240° = 120°

Hence, the fourth angle of a quadrilateral is 120°.

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