Question

Take three non-collinear points A, B and C on a page of your notebook. Join AB, BC and CA. What figure do you get? Name the triangle. Also, name
(i) the side opposite to ∠B
(ii) the angle opposite to side AB
(iii) the vertex opposite to side BC
(iv) the side opposite to vertex B.

Answer 1

The figure that we get is that of a triangle.
The name of the triangle is $△\mathrm{ABC.}$
(i) The side opposite to $\angle \mathrm{B}$is AC.
(ii) The angle opposite to AB is $\angle \mathrm{ACB}$.
(iii) The vertex opposite to BC is A.
(iv) The side opposite to the vertex B is AC.