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Two angles of a quadrilateral each measure 90°. A third angle of the quadrilateral measures 125°. What is the measure of the fourth angle of the quadrilateral? A. 55° B. 65° C. 90° D. 125°
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Two angles of a quadrilateral each measure 90°. A third angle of the quadrilateral measures 125°.

What is the measure of the fourth angle of the quadrilateral?

A.
55°

B.
65°

C.
90°

D.
125°

User Juporag
by
8.0k points

2 Answers

6 votes
The sum of interior angles in a quadrilateral is 360 degrees, so you have 2(90)+125+x=360, solving for x you get x=55
User Cj Anderson
by
8.3k points
4 votes
sum = 360

360 - (90+90+125)
= 360 - 305
= 55
answer is A.
55°
User Aaron Tribou
by
8.3k points
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