The measures of two angles of a triangle are 51° and 23°. Find the measure of the
third angle.
[A] 286°
[B] 74°
[C] 106
[D] 390

Respuesta :

Answer:

The answer is C. 106°

Step-by-step explanation:

All triangles have a total of 180°. Therefore, since you already know the measure of two of the three angles, you can add those together, which equals 74. Then subtract that from 180, which gives you 106°