Symmetry

Front

What is symmetry?

Back

Symmetry refers to a balanced and proportionate similarity found in two halves of an object, which can be divided by a line or a point.

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

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.

Front

What is the smallest angle of rotation that maps an object onto itself?

Back

The smallest angle of rotation that maps an object onto itself is called the angle of rotational symmetry.

Front

What is an isometry?

Back

An isometry is a transformation that preserves distances and angles, meaning the pre-image and image are congruent.

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

What is a reflection in geometry?

Back

A reflection is a transformation that flips a shape over a line, creating a mirror image.

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a shape around a fixed point at a certain angle.

Front

What is the difference between symmetry and asymmetry?

Back

Symmetry refers to balanced proportions, while asymmetry refers to a lack of balance or proportion.