Homework 4: Symmetry

Front

What is symmetry?

Back

Symmetry is a property where a shape or object can be divided into two identical parts that are mirror images of each other.

Front

What is a line of symmetry?

Back

A line of symmetry is an imaginary line that divides a shape into two equal halves that are mirror images.

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 circle have?

Back

A circle has an infinite number of lines of symmetry.

Front

What is rotational symmetry?

Back

Rotational symmetry is when a shape can be rotated around a central point and still look the same at certain angles.

Front

Which letter has only rotational symmetry?

Back

The letter 'S' has only rotational symmetry.

Front

How many lines of symmetry does an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What is the difference between reflectional and rotational symmetry?

Back

Reflectional symmetry involves a mirror line, while rotational symmetry involves turning the shape around a point.

Front

Can a shape have both reflectional and rotational symmetry?

Back

Yes, a shape can have both types of symmetry, such as a square.

Front

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

Back

An irregular pentagon is an example of a shape with no lines of symmetry.