asked 77.7k views
2 votes
The folding chair has different settings that change the angles formed by its parts. Suppose m2 is 34 and m3 is 76. Find m1The diagram is not to scale.

A. 130
B. 110
C. 100
D. 120

The folding chair has different settings that change the angles formed by its parts-example-1

2 Answers

6 votes
the correct answer is B 110
answered
User Zichen Wang
by
7.8k points
6 votes
the answer is

first, the sum of angles in triangle is always 180°
so mx + m2 +m3 = 180°, so mx=1800-76-34=70°
but according to the figure m1 + mx=180°, so m1=180-mx=180-70=110°

the m1 = 110°


answered
User Radu C
by
7.8k points
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