Parts or Elements of a Triangle

Triangles are three sided Polygons. Polygons are closed shapes made of line segments.

Parts or Elements of a Triangle

Vertex:

• Each corner point of a triangle is known as vertex.
• The plural form of vertex is “vertices”

Question: how many vertices are in a triangle.

Side:

• The line segment joining the two vertices makes up the side.
• Here AB, BC and CA are the sides of the triangle.

Angles:

• The angles are formed between the two sides of the triangle.

Question: Identify the angles present in the triangle?

∠ABC, ∠BAC, ∠ACB. There are three angles in a triangle.

	Types of Triangles – Depends on each sides size

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