Question

Two of the angles in a triangle measure 90° and 26°. What is the measure of the third angle?

Answer 1

In a triangle, the sum of all three angles is always 180°. You can find the measure of the third angle by subtracting the measures of the other two angles from 180°.

Given:
- First angle = 90°
- Second angle = 26°

To find the third angle, you calculate:

\[
\text{Third angle} = 180° - (90° + 26°)
\]

Calculating the sum of the first two angles:

\[
90° + 26° = 116°
\]

Now subtract that sum from 180°:

\[
\text{Third angle} = 180° - 116° = 64°
\]

Therefore, the measure of the third angle is **64°**.