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Ratios of Scale drawings

Ratios of Scale drawings. Scale drawings :. A scale drawing is a drawing that represents a real object. The scale of the drawing is the ratio of the size of the drawing to the actual size of the object. Examples: blueprints and maps. Scale factor :.

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Ratios of Scale drawings

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  1. Ratios of Scale drawings

  2. Scale drawings: • A scale drawing is a drawing that represents a real object. The scale of the drawing is the ratio of the size of the drawing to the actual size of the object. • Examples: blueprints and maps.

  3. Scale factor: • The scale factor is the ratio of the new image size to the corresponding old image size. • Example: If a model car has a scale factor of 1/10 , then a part that is 1 cm on the model would be 10 cm on the real car.

  4. Two types of scale drawings: • Enlargement- a drawing with a scale factor greater than 1. The image is larger than the original figure. • Reduction- a drawing with a scale factor less than 1. The image is smaller than the original figure.

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