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5 votes
A quadrilateral has three angles that measure 90º, 80º, and 74º.

Write an equation to find the 4th angle measure (x).

Find the unknown angle measure, showing your work.

2 Answers

5 votes
360-90-80-74=your answer since a quadrelaterial needs 4 sides. 116 degrees would be your answer
User Kateroh
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1 vote
I did the math and x=116
User Peter Dang
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7.8k points