Question

In the diagram, the measure of angle 3 is 89°, and the measure of angle 6 is 88°.

What is the measure of angle 4?
88°
89°
91°
92°
(Diagram showed below)

Answer 1

91 because 180- 89=91

Answer 2

Alright, lets get started.

Angle 3 and angle 4 are adjacent angles because they are having the common side.

They both are on straight line, so, their addition will be 180°.

Suppose angle 4 is x , hence

angle 4 + angle 3 = 180

`x + 89 = 180`

Subtracting 89 from both sides

`x + 89 - 89 = 180 - 89`

`x = 91`°

Hence angle 4 is 91°. : Answer

Hope it will help :)