Question

how many lines of reflectional symmetry does an equilateral triangle have? 1 2 3 4

Explanation:

Step1: Recall the definition of reflectional symmetry

A line of reflectional symmetry is a line that divides a figure into two congruent parts such that one part is the mirror image of the other.

Step2: Analyze an equilateral triangle

For an equilateral triangle, we can draw a line of symmetry from each vertex to the mid - point of the opposite side.
Since an equilateral triangle has 3 vertices, we can draw 3 such lines.

Answer:

C. 3