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

User Fazi
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1 Answer

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°.

User Tarryn
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8.1k points
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