Question

Natalia measured the angles of a triangle. Two of the angles mesured 20° each. What was the measure of the third angle of Natalia's triangle?A.) 50°B.) 140°C.) 180°D.) 20°

Answer 1

The total angle of a triangle is equals to 180 degree. The triangle has 3 angles. we were given 2 angles as 20 degree each and asked to find the last angle. The last angle can be found below

$\begin{gathered} 180-20-20\text{ =x} \\ x=180-40 \\ x=140^{\circ} \end{gathered}$

The last angle is 140 degrees.