Respuesta :

Answer:  55 degrees  (choice B)

============================================================

Explanation:

Let x be the measure of each congruent base angle.

The three interior angles of any triangle always add to 180 degrees.

x+x+70 = 180

2x+70 = 180

2x = 180-70

2x = 110

x = 110/2

x = 55 degrees

andrearoseb11

Answer:

55 degrees

Step-by-step explanation:

Since the triangle is isosceles there are two congruent base angles and 1 vertex angle. The three angles add up to 180 degrees.

180 minus the vertex angle of 70 degrees leaves 110 degrees for the remaining two angles. Divide 110 by 2 to get the measure of each base angle.

180 - 70 = 110/2 = 55 degrees

Otras preguntas