Rotational & reflectional symmetry

Front

What is rotational symmetry?

Back

A shape has rotational symmetry if it can be rotated around a central point and still look the same at certain angles.

Front

What is reflectional symmetry?

Back

A shape has reflectional symmetry if it can be divided into two identical halves that are mirror images of each other.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

What is the difference between rotational and reflectional symmetry?

Back

Rotational symmetry involves turning the shape around a point, while reflectional symmetry involves flipping the shape over a line.

Front

What is an example of a shape with both rotational and reflectional symmetry?

Back

A square has both rotational and reflectional symmetry.

Front

How many lines of symmetry does an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What is translational symmetry?

Back

Translational symmetry occurs when a shape can be moved (translated) along a certain direction and still look the same.

Front

Which letter has only rotational symmetry?

Back

The letter 'S' has only rotational symmetry.

Front

What is point symmetry?

Back

A shape has point symmetry if it looks the same when rotated 180 degrees around a central point.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.