Answer:
A
Explanation:
the sum of all angles in a triangle is always 180°.
the combination of an inner and an outer angle towards a flat line is always 180°. simply because that line simulates a diameter of a circle with the vertex being the center. and half a circle has 180°.
so,
180 = angle 3 + angle 4 = angle 3 + 120°
angle 3 = 60°
180 = angle 1 + angle 2 + angle 3 = angle 1 + 35 + 60
angle 1 = 180 - 35 - 60 = 85°
180 = angle 1 + angle 5 = 85 + angle 5
angle 5 = 95°