Since angle 4 is across from angle 2 it is equal to it because they are called opposite or vertical angles which are always equal.
Angle 4 = 143 degrees.
Angles 1 and 2 are supplementary because they share one of the same lines. This means their angle values add up to 180 which is the angle measure of a line.
180 - 143 = 37
Angle 1 = 37 degrees.
Since angle 3 is across from angle 1 it is equal to it because they are called opposite or vertical angles which are always equal.
The measure of angle 1 would be 37 degrees because a straight angle is 180 degrees.
You subtract 143 from 180 to get 37 degrees.
measure of angle 1 = 37
For the measure of angle 3, it is the same as the measure of angle 1 because vertical angles have the same angle measure. Angle 1 and Angle 3 are vertical angles.
measure of angle 3 = 37
Angle 4 and Angle 2 are vertical angles, so they have the same measure.
