Warm-Up_Transformations & Symmetry

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

How many lines of symmetry does a square have?

Back

A square has 4 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

How many degrees of rotation does a square have for rotational symmetry?

Back

A square has rotational symmetry of 90 degrees.

Front

What is the degree of rotational symmetry for an equilateral triangle?

Back

An equilateral triangle has a degree of rotational symmetry of 120 degrees.

Front

How many lines of symmetry does an equilateral triangle have?

Back

An equilateral triangle has 3 lines of symmetry.

Front

What is the angle of rotation that does NOT map a regular nonagon onto itself?

Back

120 degrees does NOT map a regular nonagon onto itself.

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 relationship between the number of sides of a polygon and its lines of symmetry?

Back

Regular polygons have the same number of lines of symmetry as they have sides.

Front

What are the angles of rotation that map a regular hexagon onto itself?

Back

The angles of rotation that map a regular hexagon onto itself are multiples of 60 degrees.