Question

in a quadrilateral one angle is 120° .the remaining three angles are equal . find the measures of these three angles .​

Answer 1

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Answer 2

Let an equal angle be x.

The total of all sides = 360°

So,

120° + x° + x° = 360°

120° + 3x° = 360°

3x° = 360° - 120°

x° = 240°/3

x° = 80°

So the other three equal angles are 80°.

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