Geometric Scaling

A common ratio for pairs of corresponding sides of similar figures.

• Scale Factor

• Rate

• Scale Drawing

• Cross Products

A drawing that shows a real object with accurate sizes except they have all been reduced or enlarged by a certain amount (called the scale).

• Cross Prodcuts

• Corresponding Sides

• Unit Rate

• Scale Drawing

The ratio of the size of a figure on a drawing to the actual size of the figure.

• Scale

• Cross Products

• Unit Rate

• Ratio

Sides that have the same relative position in geometric figures and are proportional.

• Scale Factor

• Similar Figures

• Scale Drawing

• corresponding sides

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

If the blue is the pre-image and the red is the image, is this an enlargement or a reduction?

• enlargement

• reduction

what is the length of x?

• 9mm

• 4mm

• 4/9mm

• 36mm

Figures that have the same shape but different sizes; their sides are proportional, and their corresponding angles are equal.

• Scale Factor

• Similar Figures

• Umit Rate

• Equivalent Ratios

To multiply or divide two related quantities by the same number. 

• Ratio Table

• Scaling

• Non-proportional

• Unit Rate

Original figure: Triangle, vertices A(1, 2), B(3, 3), C(5, 6)

Scaling operation: Scale by a factor of 2 from the origin

• A'(2, 4), B'(6, 6), C'(10, 12)

  
  

• A'(2, 2), B'(6, 3), C'(10, 6)

  
  

• A'(1, 4), B'(3, 6), C'(5, 12)

  
  

• A'(2, 2), B'(3, 3), C'(5, 6)