7 M1 TC L17 HW

Is scale drawing A an enlargement or a reduction of the original figure?

• Enlargement

• Reduction

What is the scale factor that relates scale drawing A to the original figure?

Mathematical Equivalence

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Is scale drawing B an enlargement or a reduction of the original figure?

• Enlargement

• Reduction

What is the scale factor that relates scale drawing B to the original figure?

Write an equation that relates the lengths of scale drawing B to the lengths of scale drawing A. Let b represent a length of scale drawing B, and let a represent the corresponding length of scale drawing A.

Determine the scale factor.

Write an equation that relates the scale drawing to the original figure. Let f represent a length of the original figure, and let d represent the corresponding length of the scale drawing

Use the equation d=3f to find the length of line JL.

The length of line JL is ___ units.

Determine the scale factor.

Write an equation that relates the scale drawing to the original figure. Let a represent a length of the original figure, dand let b represent the corresponding length of the scale drawing.