Lines of symmetry P4

Lines of symmetry P4

1) Understand what is a line of symmetry

2) Identify lines of symmetry

What is a line of symmetry???

A line of symmetry is a line that cuts a shape exactly in half AND if you were to fold the shape along the line, both halves would match exactly.

• If a figure has at least one line of symmetry, it is symmetric

• If it does not have any line of symmetry, it is NOT symmetric (asymmetric)

The rectangle has...

2 lines of symmetry

Multiple Choice

Is this a line of symmetry for the figure????

• Yes

• No

Although the line divides the rectangle into 2 equal halves,

when folded along the line, they do not fit exactly

Multiple Choice

Does this figure have line(s) of symmetry?

• Yes

• No

Multiple Choice

Does this figure have line(s) of symmetry?

• Yes

• No

Multiple Choice

Does this figure have line(s) of symmetry?

• Yes

• No

Multiple Choice

Does this figure have line(s) of symmetry?

• Yes

• No

Let's recap!

• A line of symmetry

• 1) divides a shape exactly in HALF

• 2) each half will FIT EXACTLY with the other half when folded along the line

A line of symmetry

• divides the figure exactly in equal HALVES

• each half must FIT EXACTLY onto the other when folded along the line of symmetry

Multiple Choice

Which of the following shapes does not have a line of symmetry?

Fill in the Blanks

Multiple Choice

Which of the following shapes has a line of symmetry?

Multiple Choice

How many lines of symmetry does this shape have?

• 0
• 1
• 2
• 4

Multiple Choice

How many lines of symmetry does this shape (square) have?

• 1

• 2

• 4

• 8

Multiple Choice

• is symmetrical

• not symmetrical

Multiple Choice

• Is symmetrical

• not symmetrical

Multiple Choice

Symmetrical?

• Is symmetrical

• not symmetrical

Multiple Choice

How many lines of symmetry does this shape have?

• 1
• 2
• 4
• 6

Multiple Choice

Is this a line of symmetry?

• Yes
• No

Multiple Choice

How many lines of symmetry does this trapezoid have?

• 0
• 1
• 2
• 3

Multiple Choice

How many lines of symmetry does this shape have?

• 0
• 1
• 2
• 4

Multiple Choice

How many lines of symmetry does this shape have?

• 1
• 2
• 3
• 4

Multiple Choice

How many lines of symmetry does the picture have? 

• 0 lines of symmetry
• 1 line of symmetry
• 2 lines of symmetry
• 4 lines of symmetry

Multiple Choice

Symmetrical?

• Is symmetrical

• not symmetrical

Multiple Choice

Symmetrical?

• Is symmetrical

• not symmetrical

Multiple Choice

Symmetrical?

• Is symmetrical

• not symmetrical

Multiple Choice

Symmetrical?

• Is symmetrical

• not symmetrical

Multiple Choice

Which shows the number of lines of symmetry in a regular pentagon?

Multiple Choice

How many lines of symmetry are in a circle?

• 0

• 4

• 100

• infinite