Are shapes that have the same shape, but not necessarily the same size.

Compares the sizes of the parts of the scale drawing to the actual sizes on the original object.

They are sides that are in the same position in different plane figures. 

They are sides that have different ratios.

Shapes that have the same shape, but not necessarily the same size.

A ratio/number that compares the sizes of the parts of the scale drawings.

They are sides that are in the same position in different plane figures.  

The length of a side of a similar figure.

2 ft

3 ft

4 ft

6 ft

10

7

9

11

x = 9

x = 28

x = 7

x = 63

8:12

3:2

4:8

6:12

35 cm

10 cm

42 cm

28 cm

Pre-image

Image

Pre-image

Image

(5, 1)

(2, -5)

(-1, 1)

(8, -2)

(x, y)---->(x + 3, y + 2)

(x, y)-----> (x+2, y + 3)

(x, y)----> (x - 2, y + 3)

(x+8, y+4)

(x-8, y-4)

(x+4, y+8)

(x-4, y-8)

2

3

1/3

1/2

½

¼

4

2

(-3, -2)

(3, -2)

(-12, -8)

(-2, -3)

(2,2)

(8,8)

(0,12)

(4,12)