Question 15 Marks
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 $\angle\text{B.}$
$ii.\ $The angle opposite to side $AB.$
$iii.\ $The vertex opposite to site $BC.$
$iv.\ $The side opposite to vertex $B.$
$i.\ $The side opposite to $\angle\text{B.}$
$ii.\ $The angle opposite to side $AB.$
$iii.\ $The vertex opposite to site $BC.$
$iv.\ $The side opposite to vertex $B.$
Answer
View full question & answer→Let us consider three non-collinear points $A, B$ and $C$ join them.
After joining these points, we get a ‘Triangle’, as it consists of three sides. The name of the triangle we get is $\triangle\text{ABC}.$
$i.\ $The side opposite $\angle\text{B}$ is $AC.$
$ii.\ $The angle opposite side $AB$ is $\angle\text{C}.$
$iii.\ $The vertex opposite side $BC$ is $A.$
$iv.\ $The side opposite vertex $B $ is $AC.$
After joining these points, we get a ‘Triangle’, as it consists of three sides. The name of the triangle we get is $\triangle\text{ABC}.$
$i.\ $The side opposite $\angle\text{B}$ is $AC.$
$ii.\ $The angle opposite side $AB$ is $\angle\text{C}.$
$iii.\ $The vertex opposite side $BC$ is $A.$
$iv.\ $The side opposite vertex $B $ is $AC.$