A quadrilateral has angles that measure 60°, 95°, and 150°. What is the measure of the fourth angle? A. 25° B. 55° C. 85° D. 125°

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asked Apr 6, 2018 147k views

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Optical Phoenix · Answer 1 · 2018-04-11T03:17:14+0000

The sum of all angles of a quadrilateral is equal to 360º.

x=fourth angle;
Therefore:

x+60º+95º+150º=360º
x=360º-60º-95º-150º=55º

Answer: B. 55º

A quadrilateral has angles that measure 60°, 95°, and 150°. What is the measure of the fourth angle? A. 25° B. 55° C. 85° D. 125°

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