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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°

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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5 votes
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°

User Svante Svenson
by
8.7k points

1 Answer

5 votes
a quadrilateral measures 360°. let's let "x" stand for the fourth angle
360°= 60°+95°+150°+x
360=305+x
360-305=x
x=55
User Izayoi Sakuya
by
8.2k points
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