Question

the base angle of
on the isosceles triangle is
55°
the measure of the vertix angle
is
​

Answer 1

Answer:

the vertix angle measures 70°

Step-by-step explanation:

the sum all angles in triangle=180°

those angles which have two same sides is isosceles triangle. angle A + angle B + angle C = 180. angle A + 55 + 55 = 180. angleA + 110 = 180. angle A= 180-110. angle A =70° vertix angle measures 70°