Question

3 The three angles of a quadrilateral are 60° 6oº and 120
Find thr measure of each of the four angles.​

Answer 1

Given

1st angle = 60° (angle A)

2nd angle = 60° (angle B)

3rd angle = 120° (angle C)

To Find

Measure of 4th angle = x (let)

We know that some of 4 angles of quadrilateral = 360°

So put values

Angle A + Angle B + Angle C + Angle D = 360°

60 + 60 + 120 + x (we had taken d 4th angle as x) = 360

140 + x = 360

x = 360 - 140

x = 220

so the 4th angle = 220°

Hope it helps dear

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