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A quadrilateral has angles that measure 56°, 97°, and 136°. What is the measure of the fourth angle?
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A quadrilateral has angles that measure 56°, 97°, and 136°.

What is the measure of the fourth angle?

User Ronan Quigley
by
8.3k points

2 Answers

4 votes
The sum of the interior angles can be represented by:
180(n-2)
180 x 2 = 360
Therefore, the sum of the angles must be 360.

56 + 97 + 136 = 289
360 - 289 = 71°

Hope I helped!
User Samuelnj
by
8.8k points
4 votes
Angles of a quadrilateral add up to 360 degrees. Thus;
360-(56+97+136)
=71°
User Shamik
by
7.8k points
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