Reflection and Rotational Symmetry

Front

What is reflection in geometry?

Back

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

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 lines of symmetry does a rectangle have?

Back

A rectangle has 2 lines of 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

What are the angles of rotation for a rectangle?

Back

The angles of rotation for a rectangle are multiples of 90 degrees.

Front

What is a rigid transformation?

Back

A rigid transformation is a transformation that preserves the size and shape of a figure, such as reflections and rotations.

Front

How many lines of symmetry does a regular hexagon have?

Back

A regular hexagon has 6 lines of symmetry.

Front

What is the difference between line symmetry and rotational symmetry?

Back

Line symmetry involves a line dividing a shape into mirror-image halves, while rotational symmetry involves rotating a shape around a point and having it look the same.

Front

Can a shape have both line and rotational symmetry?

Back

Yes, a shape can have both line and rotational symmetry, such as a square.

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.