Question

A triangle has 2 angles measuring 40 degrees and 50 degrees. What is the measure of the 3rd angle and classify the triangle.

Answer 1

A triangle has all three angles summing up to 180. If two of the sides measure 40 degrees and 50 degrees, then the third side measures as follows;

`\begin{gathered} 40+50+A=180 \\ A=180-40-50 \\ A=90 \end{gathered}`

The third angle, which is labelled as angle A measures 90 degrees, and that means the triangle is a "right angled triangle."