note math form 3 - 9 scale drawing

Thursday, April 13, 2023

SCALE DRAWING

AIRIL AHMADSMK PERIMBUN

Thursday, April 13, 2023

EXERCISE

Drawing

Thursday, April 13, 2023

SCALE DRAWING

Scale = Length of a side of the drawing

Length of corresponding side of the object

Scale =D

O

DC= 4UNITSD’C’= 2UNITSD

C

Object

A

E

BA’

B’ C’

D’E’Drawing

DScale

O

2

4Scale

1

2Scale

DC= 4 units

D’C’= 2 units

Object

DScale

O

2

4Scale

2 : 4Scale2 4

:2 2

Scale

1: 2Scale

A

D C

B

DC= 3UNITSD’C’= 6UNITS

Scale = 6:3

Scale = 2:1

Object

A’

D’ C’

B’Drawing

Scale = 2:1

2 2

Scale = 1: 1/2

DC= 3 units

D’C’= 6 units

Object

DScale

O

6

3Scale

6 : 3Scale6 3

:6 6

Scale

31:

6Scale

1

2

11:

2Scale

Thursday, April 13, 2023

EXERCISE

Scale

EXERCISE 1:Find the scale

12 cm

6 cm

3 cm

6 cmObject

Drawing

EXERCISE 2:Find the scale

15 cm

5 cmObject

Drawing

EXERCISE 3:Find the scale

16 cm

4 cmDrawing

Object

EXERCISE 4:Find the scale

24 cm

3 cmObject

Drawing

EXERCISE 5:Find the scale6

cm

2 cm

Drawing

Object

Object

EXERCISE 6:Find the scale5 cm

20 cmDrawing

Object

EXERCISE 7:Find the scale

6 cm

18 cm

Drawing

Thursday, April 13, 2023

AIRIL BIN AHMAD

MAPS AND PLANS

Thursday, April 13, 2023

AIRIL BIN AHMAD

MAPS AND PLANS1:10 000

Means

1cm on the map and 10 000cm on the ground

The ratio 1 is called the representative fraction (RF)

10 000