EXERCISE 10A1. Three angles of a quadrilateral are 75°, 90° and 75° – InterviewSolution

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EXERCISE 10A1. Three angles of a quadrilateral are 75°, 90° and 75°. Find the measure ofthe fourth angle.

Answer»

Sum of all the four angles of a quadrilateral is 360°.

Let the unknown angle be x°.75+90+75+x=360240+x=360x=120

The fourth angle measures 120°.

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