4.6B Lines of Symmetry

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical parts that are mirror images of each other.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

How many lines of symmetry does a triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What is the line of symmetry for a vertical shape?

Back

The vertical line of symmetry divides the shape into left and right mirror images.

Front

What is the line of symmetry for a horizontal shape?

Back

The horizontal line of symmetry divides the shape into top and bottom mirror images.

Front

Is a shape with no lines of symmetry symmetrical?

Back

No, a shape with no lines of symmetry is not symmetrical.

Front

How can you find lines of symmetry in a shape?

Back

You can fold the shape along a line to see if both halves match perfectly.

Front

What is an example of a shape with one line of symmetry?

Back

A regular kite has one line of symmetry.