How to find the angle measure of angle 1?​

How To Find The Angle Measure Of Angle 1 class=

Answer :

70 degrees
a triangle has a sum of 180 degrees
two points are given: 40 & 30
40+30 is 70
180-70 = 110
the missing point is 110
a straight line is 180 degrees as well
to find 1 u need to subtract 180 by 110
which makes 1 70 degrees