1 / 14

Line Symmetry

Line Symmetry

- If a shape can be folded in half so that one half

fits exactly on top of the other, then we say

that the shape has got line symmetry. - The fold is called a line of symmetry.
- This shape has got a vertical line of symmetry.

Line Symmetry in the Alphabet

- Which letters have got lines of symmetry?

Click to see the lines of symmetry.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Lines of Symmetry all around us

- Which of these road signs have got lines of

symmetry?

Click to see the lines of symmetry.

Line Symmetry with Pentominoes

- If you dont know what a pentomino is, then click

here. - If you have done the pentominoes activity before,

then you will know what a pentomino is and how

many different pentominoes there are. - Here they are ...

Line Symmetry with Pentominoes

- How many lines of symmetry does each Pentomino

have? - Sort them according to their lines of symmetry.

Line Symmetry with Pentominoes

One Line of Symmetry

Two Lines of Symmetry

Four Lines of Symmetry

Click to start sorting

Line Symmetry with 7-Pin Polygons

- If you dont know what a 7-pin polygon is, then

click here. - If you have done the 7-pin polygons activity

before, then you will know what a 7-pin polygon

is and how many different ones there are. - Here they are ...

Line Symmetry with 7-Pin Polygons

- How many lines of symmetry does each7-Pin

Polygon have? - Sort them according to their lines of symmetry.

Line Symmetry with 7-Pin Polygons

One Line of Symmetry

Two Lines of Symmetry

Six Lines of Symmetry

Three Lines of Symmetry

Click to start sorting

Now you know all about line symmetry!END OF

PRESENTATION

Pentominoes

- A pentomino is made out of five squares that are

connected along at least one edge.

These are NOT pentominoes.

Here is an example of a pentomino.

How many different pentominoes can you find?

Click here to return to line symmetry.

7-Pin Polygons

- Here is an arrangement of 7 pins.

A 7-pin polygon is a closed shape with straight

sides with corners on the pins.

Here are some examples of 7-pin polygons.

How many different 7-pin polygons can you find?

Click here to return to line symmetry.

END OF PRESENTATION