A quadrilateral has angles that measure 87°, 69°, and 104°. What is the measure of the fourth angle?

Sum of angles of quadrilateral = 360
87 + 69+ 104 + x = 360
156 + 104 +x = 360
260 + x = 360
thus, x = 100
Thus, the measure of the fourth angle is 100 degrees

Answered by tadvisohil886 | 2024-06-10

The answer should be ................... 100

Answered by khalathomas70 | 2024-06-24

The fourth angle of the quadrilateral measures 100°. This is found by subtracting the sum of the three given angles from 360°. Thus, the calculation shows that 360° - 260° = 100°.
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Answered by khalathomas70 | 2024-11-17