Answer:
The triangle is an isosceles triangle because 2 of the sides have the same measure and 1 of the sides does not.
Explanation:
Angle BAC = Angle ACD = 50 degrees, because they are alternate angles.
Angle ACB = 180 - (50 + 80) = 50 degrees, because angles in a triangle sum up to 180 degrees.
Since Angle BAC = Angle BCA, triangle ABC is isosceles.
1.6m questions
2.0m answers