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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.

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.
asked 146k views
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.

asked
User Tharindu Pradeep
by
7.7k points

2 Answers

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