Respuesta :

musiclover10045

The sum of the three inside angles of a triangle need to equal 180 degrees.

X = 180 - 79 - 70

x = 31 degrees.

samuelonum1

Answer:

The third angle is 31°

Step-by-step explanation

Step one:

Given first and second angles to be

79° and 70° we need to find x

Step two : the sum of angles in a triangle is 180°

X°+79°+70°=180°

X= 180-70-79

X is 31°