Question

three angles of a quadrilateral measures 68°, 95° and 133° . find the measure of fourth angle.​

Answer 1

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Sum of angles of a quadrilateral = 360°

Let the unknown angle be x

x + 68 + 95 + 133 = 360°

x + 296 = 360

x = 360 - 296

x = 64°

Answer 2

Answer:

Sum of the measures of all 4 angles of a quadrilateral = 360°

Given, here three angles are of 68°, 95°, 133°.

So, the measurement of the 4th angle = 360°- (68°+95°+133°) = 360° - 296° = 64°.