Line and Rotational Symmetry Quick Check

Front

What is rotational symmetry?

Back

Rotational symmetry is a property of a shape that looks the same after a certain amount of rotation. For example, a shape with rotational symmetry can be rotated around a central point and still appear unchanged.

Front

How can you identify rotational symmetry in a shape?

Back

To identify rotational symmetry, rotate the shape around its center and check if it matches its original position at any angle less than 360 degrees.

Front

What is line symmetry?

Back

Line symmetry, also known as reflection symmetry, occurs when a shape can be divided into two identical halves that are mirror images of each other along a line.

Front

How many lines of symmetry does a circle have?

Back

A circle has an infinite number of lines of symmetry because it can be divided into two equal halves at any angle.

Front

What is the relationship between rotational symmetry and the number of lines of symmetry?

Back

A shape with rotational symmetry may have multiple lines of symmetry, but not all shapes with lines of symmetry have rotational symmetry.

Front

Which letters of the alphabet have rotational symmetry?

Back

The letters that have rotational symmetry include: H, I, O, S, X, and Z.

Front

How many lines of symmetry does a regular hexagon have?

Back

A regular hexagon has 6 lines of symmetry.

Front

Can a shape have both line symmetry and rotational symmetry?

Back

Yes, a shape can have both line symmetry and rotational symmetry. For example, a square has both types of symmetry.

Front

What is an example of a shape with no lines of symmetry?

Back

An example of a shape with no lines of symmetry is a scalene triangle.

Front

How do you determine the number of lines of symmetry in a polygon?

Back

To determine the number of lines of symmetry in a polygon, you can draw lines through the vertices and midpoints to see how many ways the shape can be divided into mirror-image halves.