A closed figure with three sides is a triangle.
We may classify triangles based on their sides and angles.
Let us explore how the triangles are classified based on their sides in detail.
The naming of triangles based on sides
Type 1: Equilateral triangle
A triangle with all three sides of equal measure is an equilateral triangle.
Here, \(\overline{AB} = \overline{BC} = \overline{AC}\).
In other words, all sides of triangle \(ABC\) are equal.
Type 2: Isosceles triangle
A triangle with two sides of equal measure and a third unequal side is an isosceles triangle.
Here, \(\overline{AB} = \overline{AC}\).
Two sides of the triangle \(ABC\) are equal while the third side is unequal.
Type 3: Scalene triangle
A triangle with all three sides of unequal measure is a scalene triangle.
Here, the three sides AB, BC and AC are unequal.