Symmetry

Front

What is symmetry?

Back

Symmetry is a property where a shape or object can be divided into parts that are arranged in a balanced and proportional manner. It can be classified into two main types: reflective symmetry and rotational symmetry.

Front

What is reflective symmetry?

Back

Reflective symmetry, also known as line symmetry, occurs when one half of an object is a mirror image of the other half. The line that divides the object is called the line of symmetry.

Front

What is rotational symmetry?

Back

Rotational symmetry is when an object can be rotated around a central point and still look the same at certain angles. The smallest angle of rotation that maps the object onto itself is called the minimum degree of rotation.

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 an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of symmetry.

Front

What is the minimum degree of rotation for a shape with 4-fold rotational symmetry?

Back

The minimum degree of rotation for a shape with 4-fold rotational symmetry is 90 degrees.

Front

What is the minimum degree of rotation for a shape with 3-fold rotational symmetry?

Back

The minimum degree of rotation for a shape with 3-fold rotational symmetry is 120 degrees.

Front

How many lines of symmetry does a circle have?

Back

A circle has infinitely many lines of symmetry.

Front

Which letter has only rotational symmetry?

Back

The letter 'S' has only rotational symmetry.