Question

What type of triangle is this?

What is the measure of the base angles of the triangle?

Answer 1

Isoceles triangle

40°

Explanation:

You see the two lines on each side of the triangle, that means it's parallel. Isoceles triangles have 2 parallel sides and 2 same angles.

Angles in a triangle add to 180°, so 180-100=80°.

We know both angles are the same size because they are parallel, so 2x = 80°

1 angle must = 40° then