Question

$8$ different shapes are given in the following figure. How many shapes have exactly $1$ line of symmetry?

Answer 1

A line of symmetry is a line that divides a figure into two corresponding parts, each of which is the mirror image of the other.

$Isosceles$ $trapezoid$ and $Isosceles$ $triangle$ have exactly one line of symmetry.

In case of $Isosceles$ $trapezoid$, The vertical line which cut both the horizontal line into 2 equal parts is line of symmetry .

In case of $Isosceles$ $triangle$, the perpendicular bisector of longest side is line of symmetry.