Question

What is the value of x?

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x =
A triangle with angle measures thirty-nine degrees and one hundred two degrees. The third angle has an unknown measure, x degrees.

Answer 1

x=39

Explanation:

The sum of the measure of all of the interior angles of a triangle is equal to 180 degrees. If a triangle has angle measures known to be 102 and 39 degrees, in order to find the last angle measure an equation can be used such as
`x=180-102-39`. When solving this equation the third angle measure is x, which is revealed to be 39 degrees.