Question

What is the value of x in this triangle?

Enter your answer in the box.
x = [ __]

Answer 1

Answer: 39

Explanation:

In any triangle, all the angles added together is 180. 180-39-102=39, so teh answer is 39.

Answer 2

x = 39

Explanation:

You want to know the measure of the third angle in a triangle in which two of the angles are 39° and 102°.

Angle sum theorem

The angles in a triangle have a total of 180°. That means ...

x° +39° +102° = 180°

x = 39 . . . . . . . . . . . . . divide by °, and subtract 141