4.6B Lines of Symmetry

Symmetry is when one shape becomes exactly like another if you flip, slide, or turn it.

A shape is symmetrical if it can be divided into two identical halves that are mirror images of each other.

A circle has an infinite number of lines of symmetry.

A square has 4 lines of symmetry.

A rectangle has 2 lines of symmetry.

An equilateral triangle has 3 lines of symmetry, while an isosceles triangle has 1.

A line of symmetry is an imaginary line that divides a shape into two identical parts.

Yes, a shape can have no lines of symmetry. An example is a scalene triangle.

The line of symmetry for a butterfly shape is usually down the center, dividing it into two identical wings.

You can find lines of symmetry by folding the shape along a line and checking if both halves match.