1. Scale drawings

2. Scale drawings are used when it is unrealistic to think about drawing an object in its actual size; so we need to “scale” them down Observe…

3. 2cm These shapes were drawn using the scale 1cm = 5m Find the actual sizes of the shapes 5cm 3cm 4cm

4. Scale drawings 2cm The squares sides measure 2cm on the scale drawing If the scale is 1cm:5m the actual size of the sides of the square would be… 2 x 5m = 10m 10m

5. Scale drawings 5cm 3cm 4cm 25m 15m 20m The sides of the triangle measure 3cm, 4cm and 5cm on the scale drawing The actual measurements of the triangle would be 3 x 5m = 15m 4 x 5m = 20m 5 x 5m = 25m