The term triangle refers to a closed figure that includes three sides, vertices, and angles.
The congruent triangles are always equal in shape. Different properties state the unity of a triangle.
The isosceles triangle is a triangle whose two among three sides are equal.
The equilateral triangle is a triangle whose all the sides are equal. And it forms a 60° angle.
Different theorems prove the congruence of a triangle. These theorems are discussed here below:
The SAS property refers to Side-Angle-Side. This theorem makes the triangle congruent with one angle and two sides.
The SAS property refers to Side-Angle-Side. This theorem makes the triangle congruent with one angle and two sides.
The SSS property refers to Side - Side - Side. It makes the triangle congruent when its three sides are equal to the other triangle.
The ASA property refers to Angle - Side - Angle. It makes the triangle congruent when it's one alongside, and two angles are equal.
These all theorems will make the triangle congruent.