Since two of the angles are equal, hence the triangle ABC is isosceles triangle
What is a triangle?
A triangle is a 2D shape that has 3 sides and angles
From the given triangle
<CAB = 50 (alternate angle) and;
<ACB = 180 - (50 + 80)
<ACB = 180 -130
<ACB = 50 degrees
Since two of the angles are equal, hence the triangle ABC is isosceles triangle
Learn more on lines and angles here: https://brainly.com/question/25716982
#SPJ1
