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.
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°
