Question

If two angles of a triangle measure 40 degrees and 70 degrees, what is the measure of the third angle?

Answer 1

SOLUTION:

We can use the idea that the sum of angles in a triangle must be 180.

Thus, if the first angle is 40 degrees and the second is 70 degrees, the third will be;

$\begin{gathered} 180-70-40 \\ \\ =70 \end{gathered}$

Therefore, the measure of the third angle is 70 degrees.