Reflection and Rotational Symmetry

Front

What is a rigid transformation?

Back

A transformation that does not change the size or shape of a pre-image; the pre-image and image are congruent.

Front

What are the angles of rotation for an octagon?

Back

Multiples of 45 degrees.

Front

What are the angles of rotation for a trapezoid?

Back

360 degrees.

Front

What are the angles of rotation for a rectangle?

Back

Multiples of 180 degrees.

Front

Which letter has rotational symmetry but no line symmetry?

Back

Z.

Front

Define reflection in geometry.

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is rotational symmetry?

Back

A figure has rotational symmetry if it can be rotated around a center point and still look the same at certain angles.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

What is the angle of rotation for a square?

Back

90 degrees.

Front

Define line symmetry.

Back

A figure has line symmetry if it can be divided into two identical halves that are mirror images of each other.