Question

A, B and C lie on a straight line.

Given that angle

y

= 128° and angle

z

= 91°, work out

x

.

Answer 1

y+what ever the angle inside=180 since its on a line

180-128=52

52+z+x=180since thats always the angles of a triangle added up

52+91+x=180

add

143+x=180

-143

x=37

Hope This Helps!!!