Introducing Scale Copies!
Presentation
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Mathematics
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7th Grade
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Practice Problem
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Medium
+2
Standards-aligned
Chelsea Moore
Used 68+ times
FREE Resource
17 Slides • 6 Questions
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Introducing Scale Copies!
I can describe some characteristics of a scaled copy.
I can tell whether or not a figure is a scaled copy of another figure.
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Review Vocabulary
A ratio is a comparison or relationship between two numbers.
A scale is ratio between two sets of measurements.
Example:
•Drawings: ¼ inch = 1 foot
•Maps: 1 inch = 250 miles
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Multiple Choice
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SCALE DRAWINGS
•A scale drawing (model) is a drawing that uses a scale to make an object smaller than (reduction) or larger than (enlargement) the real object.
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Multiple Choice
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Think of one word to describe each letter. Compare the original picture to the lettered picture.
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Multiple Select
You can click the image to enlarge it. Which letters do you think are scaled copy of the original?
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Scale Copy Characteristics
All corresponding angles are equal
Equivalent ratios for side lengths
A copy of a figure where every length in the original figure is multiplied by the same number
Pictures that appear stretched vertically or horitzonatally are not scale copies
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Multiple Select
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Open Ended
How do you know these two shapes are scale copies?
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Multiple Select
Why are the "W's" pictured NOT scale copies?
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Introducing Scale Copies!
I can describe some characteristics of a scaled copy.
I can tell whether or not a figure is a scaled copy of another figure.
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