Symmetry and Patterns

How many lines of symmetry are there on a square?

• 0

• 1

• 2

• 4

How many lines of symmetry does a rectangle have?

• 2

• 4

• 6

• 8

Symmetry is ...

• -when one shape is exactly opposite of another shape 

• -when one shape becomes exactly like another if you flip it

• -when one shape becomes exactly like another if you slide it

• reflectional symmetry

A figure has _______ symmetry when a line (or lines) divide the shape into two equal parts.

• Line

• Rotational

• Point

Which shape has an INFINITE (INFINITY) number of LINES OF SYMMETRY?

• Sphere

• Square

• Circle

• Cube

Match the following

• Line Symmetry

• When a figure is mapped onto itself by rotating it 180º about a center point.

• Translation Symmetry

• When a shape is mapped onto itself.

• Symmetry

• When a figure is mapped onto itself by sliding.

• Point Symmetry

• When a figure is mapped onto itself by rotating it less than 360º about a center point.

• Rotational Symmetry

• When a figure is mapped onto itself by a reflection in a line.

Match the following

• Occurs when a shape looks the same after a rotation

• Line Symmetry

• Occurs when a shape can be flipped or mapped onto itself

• Preimage

• The resulting image

• Rotational Symmetry

• The original image

• Image

Match the following

• No Symmetry

• 
• Symmetry

• 
• Rotational Symmetry

• The quality of being made up of exactly similar parts facing each other or around an axis.

• Line Symmetry

• 

How many lines of symmetry does the butterfly have?

• 1

• 2

• 3

• 4

How many lines of symmetry does the flower have?

• 2

• 3

• 6

• 9