aliyahmcghee9 aliyahmcghee9

13-10-2016
Mathematics

contestada

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°

Respuesta :

14-10-2016

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

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