Scale drawings. Scale drawings are used when it is unrealistic to think about drawing an object in...
-
Upload
lilian-shaw -
Category
Documents
-
view
212 -
download
0
Transcript of Scale drawings. Scale drawings are used when it is unrealistic to think about drawing an object in...
Scale drawingsScale drawings
Scale drawingsScale drawings
Scale drawings are used when it is Scale drawings are used when it is unrealistic to think about drawing an object unrealistic to think about drawing an object in its actual size; so we need to “in its actual size; so we need to “scalescale” ” them downthem down
Observe…Observe…
Scale drawingsScale drawings
2cm
These shapes were drawn using the scale These shapes were drawn using the scale 1cm = 5m1cm = 5m
Find the actual sizes of the shapesFind the actual sizes of the shapes
5cm
3cm
4cm
Scale drawingsScale drawings
2cmThe squares sides The squares sides measure 2cm on the measure 2cm on the scale drawingscale drawing
If the scale is 1cm:5m If the scale is 1cm:5m the actual size of the the actual size of the sides of the square sides of the square would be…would be…
2 x 5m = 10m 2 x 5m = 10m
10m
Scale drawingsScale drawings
5cm
3cm
4cm
25m
15m
20m
The sides of the triangle The sides of the triangle measure 3cm, 4cm and measure 3cm, 4cm and 5cm on the scale drawing5cm on the scale drawing
The actual measurements The actual measurements of the triangle would be of the triangle would be
3 x 5m = 15m3 x 5m = 15m
4 x 5m = 20m4 x 5m = 20m
5 x 5m = 25m5 x 5m = 25m