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Answers
Answer:
Scale Measurements
A scale drawing is an enlargement or reduction of a figure by a scale factor. Recall that a scale factor is the amount by which the figure is enlarged or reduced. This is also called the constant of proportionality.
A ratio can be written as 1:2, 1 to 2, or 12.
A ratio of 1:2 is not the same as the ratio 2:1 because of the placement.
Scale the Factor
Below is a rectangle that has been scaled by an amount to enlarge or reduce it. As you adjust the scale factor slider, the image will reduce or enlarge.
Use the interactive below to explore scaled images.
When the scale factor is 3, what are the dimensions of the scaled (orange) rectangle? Count the squares on the grid.
What is the image's perimeter and area? How does this compare to the original (blue) image?
When the scale factor is 0.5 (one half), what are the dimensions of the rectangle?
What is the orange (scaled) image's perimeter and area? How does this compare to the original (blue) image?
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