Question

2. find m 1
a) 147
b) 123
c) 90
d) 57

Answer 1

A triangle consists of 180 degrees.
If you take the other 2 angles and add them, you get 90 (33+57=90)
To find the other angle, we need to subtract 90 from 180.
180-90= 90.

This is a right triangle and the measure of angle 1 is 90 degrees.