GM-U3.4 Lesson Check: Reflective & 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.

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 order of rotational symmetry?

Back

The order of rotational symmetry is the number of times an object fits onto itself during a full rotation of 360 degrees.

Front

What is the angle of rotation for a shape with order 4?

Back

The angle of rotation for a shape with order 4 is 90 degrees.

Front

How do you determine the number of lines of symmetry in a polygon?

Back

To determine the number of lines of symmetry in a polygon, look for lines that can divide the shape into two identical halves.

Front

What is the angle of rotation for a regular hexagon?

Back

The angle of rotation for a regular hexagon is 60 degrees.

Front

How many lines of symmetry does a square have?

Back

A square has 4 lines of symmetry.

Front

What is the relationship between the number of sides of a regular polygon and its angle of rotation?

Back

The angle of rotation for a regular polygon can be found by dividing 360 degrees by the number of sides.

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 angle of rotation for a regular pentagon?

Back

The angle of rotation for a regular pentagon is 72 degrees.