Question

The folding chair has different settings that change the angles formed by its parts. Suppose measure of angle 2 is 31 and the measure of angle 3 is 72. Find the measure of angle 1.

Answer 1

m < 1 = 103 degrees.

Explanation:

m < 1 = m < 3 + m < 3. ( The external angle of a triangle theorem).

So m < 1 = 31 + 72 = 103.