Question

What is the value of x? Please explain how to do it.

Answer 1

Okay!
So a triangle has how many degrees?

Answer 2

180

Answer 3

Correct, sir.
We know that one angle is: 38 degrees
So:
180 - 38 = ?

Answer 4

142

Answer 5

So is the 21 on each sides stating that they are gonna be equal in degrees also? if so i would just divide 142 by 2 correct?

Answer 6

The triangle has two unknown angels to divide 142 by 2:
142/2 = 71
So:
71 + 71 + 38 = 180
180 = How many degrees in a triangle.
So angle x must be 71 degrees.

Answer 7

Thanks. That's what i thought.

Answer 8

No problem :-).