MA.8.GR.2.2 · Geometric Reasoning
A dilation scales a figure up or down from a center point, and the scale factor is the ratio of an image side length to the matching original side length. Dilation preserves shape but not size, unless the scale factor happens to be 1.
FAST items include equation editor answers for the scale factor and multiple choice items comparing two figures on a grid. Setting the ratio up backward turns a scale factor of 3 into 1/3, and that reciprocal is waiting in the answer choices on nearly every item.
These come straight from Algebro's 8th grade pre-algebra question bank, easiest first. Answer one, check it, then move to the next.
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Showcase extra: the real practice and quiz players do not have this button.
Correct answer: 2, an enlargement
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Correct answer: A.
Select every answer that applies, then check.
Showcase extra: the real practice and quiz players do not have this button.
Correct answer: A, B, C (highlighted above)
Select every answer that applies, then check.
Showcase extra: the real practice and quiz players do not have this button.
Correct answer: A, B, C (highlighted above)
Enter the number only. Do not include units like $, %, or ft²
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Correct answer:
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