Question

Take three non-collinear points L, M, N on your notebook. Join LM, MN
and NL. What figure do you get? Name:
(a) The side opposite to L
(b) The angle opposite to side LN
(c) The vertex opposite to side MN
(d) The side opposite to angle N​​

Answer 1

Answer:

If we join three non - collinear points L, M and N lie on the plane of paper, then we will get a closed figure bounded by three line segments LM, MN and NL. This closed figure is called a Triangle.

The three line segments of a triangle are also known as sides of the triangle.

Triangle LMN

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This triangle is named as ∆ LMN with its side as LM, MN and NL and three vertices as L, M and N.

The three angles named as ∠ LMN, ∠MNL and ∠ NLM are the angles of the triangle.

Three angles are denoted by ∠M, ∠N and ∠L respectively.