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).
It is an equilateral triangle
You are an isosceles triangle.
In a triangle, the sum of the measures of the angles is 180 degrees.
If a triangle is not scalene, then the triangle does not have three angles with distinct 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.
The 3 inside angles of any triangle add up to 180 degrees.