Question

HELP MEDAL AND FAN!! GEOMETRY 1A!!!
The folding chair has different settings that change the angles formed by its part. Suppose m<2 is 31 and m<3 is 72. Find m<1. This diagram is not to scale!!!!

Answer 1

first yyuou want to fidn x in the diagram.

remember a triangles angles add up to 180.
so 31+72+x=180
so 103+x=180
subtract 103 on both sides.
x=77

Answer 2

and because x and y form a line, they also add up to 180.

77+y=180
y=?