It is an equilateral triangle that has 3 equal interior angles of 60 degrees
The equilateral triangle.
A scalene triangle is a triangle in which there are no sides or angles with the same measures.
Each angle of an equilateral triangle measures 60 degrees. They are all the same.
It is impossible to find a triangle if only angle measures are given (all similar triangles have the same angles).
You are an isosceles triangle.
It is an equilateral triangle
If a triangle is not scalene, then the triangle does not have three angles with distinct measures.
In a triangle, the sum of the measures of the angles is 180 degrees.
Rotating a triangle by 50 degrees will not change the measures of its exterior angles. Exterior angles are defined based on the triangle's geometry and the positions of its vertices, which remain unchanged by rotation. Thus, regardless of the triangle's orientation, the exterior angles will retain their original measures.
An isosceles triangle, because the angles of a triangle add up to 180 and you already know that one angle measures 120 degrees, the other is 30, and so the unknown angle must also be 30 degrees. Since two of the angles are the same, two of the sides are going to be the same, making it an isosceles triangle.
A right angle triangle.
a scalene triangle has no congruent sides or measures.