Question

(i) How many lines of symmetry does an equilateral triangle have?
(ii) What is the order of rotational symmetry of an equilateral triangle?

Answer 1

(i) An equilateral triangle has 3 lines of symmetry.


(ii) The number of positions a figure can be rotated to, without bringing in any changes to the way it looked originally, is called its order of rotational symmetry.
So, the order of rotational symmetry of an equilateral triangle is 3.