Lesson 7: Scale Drawings

a scaled representation of an object

a non-scaled representation of an object

The scale tells us how lengths on the drawing relate to lengths on a different drawing.

The scale tells us how lengths on the drawing relate to lengths on the actual object.

If we have a scale drawing, we can use addition to find lengths on the actual object.

If we have a scale drawing, we can use the scale to find lengths on the actual object.

If we have a scale drawing, we can use subtraction to find lengths on the actual object.

If we have a scale drawing, we can use the protactor to find lengths on the actual object.

two dimensional (2D) measurements

three dimensional (3D) measurements