What is the missing angle of a quadrilateral if the other three angles are: 40º, 100º and 120º?

asked Jan 17, 2022 122k views

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by Fazi

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2 votes

Answer:

100°

Explanation:

40+100=140.

140+120=260.

There is 360° in a quadrilateral, so

360-260=100.

so, the last angle is 100°.

Tarryn answered Jan 21, 2022

4.2k points

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