Question

Find the measure of the indicated angle in each triangle. The choices are A=80 B=37 C=63 D=180

Answer 1

For every given triangle, the sum of all three angles is always 180 degrees.

This means;

$\angle T+\angle U+\angle V=180$

Substitute for the given values and we now have;

$\begin{gathered} 37+\angle U+63=180 \\ 100+\angle U=180 \end{gathered}$

Subtract 100 from both sides of the equation now, and we'll have;

$\begin{gathered} 100-100+\angle U=180-100 \\ \angle U=80 \end{gathered}$

ANSWER:

Measure of angle U = 80

Option A is the correct answer