Question

Work out the size of angle x

Answer 1

Explanation:

Notice that the line that the variable x is on is equal to 180 degrees. Because the angle that it is next to is equal to 51 degrees, you subtract 180 from 51:

180-51=129

The final answer to this problem is 129 degrees.

Answer 2

Let's name the angle right close to 51 as c.

c = 180°-51° since angles on a straight line is equal to 180°.

so c= 129°

so x = 129° since it corresponds to c