2.4 Investigating Symmetry ( We Do)

Identify the smallest angle of rotation that maps the image to itself.

 $Use\ \ the\ \ formula\ \ \frac{360\degree}{n}$ Use the number of edges as n. 

• 90°

• 180°

• 45°

• 60°

Identify the smallest angle of rotation that maps the image to itself.

 $\frac{360}{number\ of\ sides}$  

• 72°

• 180°

• 144°

• 45°

How many lines of symmetry does this shape have?

This a regular octogon, an 8 sided figure.

• 2

• 4

• 6

• 8

How many lines of symmetry does the picture have? 

This is an equilateral triangle.

• 0 lines of symmetry

• 1 line of symmetry

• 2 lines of symmetry

• 3 lines of symmetry

How many lines of symmetry does this shape have?

This an isosceles triangle.

• 1

• 2

• 3

• 4

What are the angles of rotation for a square?

• multiples of 30

• multiples of 45

• multiples of 90

• multiples of 180

Which shapes are symmetrical?

• 
• 
• 

Tags

CCSS.4.G.A.3

How many lines of symmetry are there on a rhombus?

• 0

• 1

• 2

• 4

Tags

CCSS.4.G.A.3

How many lines of symmetry does this figure have?

• None

• Two

• One

At which angle will the hexagon rotate onto itself?

• 60°

• 90°

• 120°

• 180°

Answer explanation