
Day 63 - Proportions, Scale Factor & Similarity
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal.
2.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
To solve a proportion, cross-multiply the terms and then solve for the unknown variable.
3.
FLASHCARD QUESTION
Front
What is a scale factor?
Back
A scale factor is a number that scales, or multiplies, some quantity. It is used to determine the size of similar figures.
4.
FLASHCARD QUESTION
Front
If the scale factor from ΔDEF to ΔABC is 1/2, what does this mean?
Back
It means that every side of ΔDEF is half the length of the corresponding side in ΔABC.
5.
FLASHCARD QUESTION
Front
What does it mean for two figures to be similar?
Back
Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding angles are equal.
6.
FLASHCARD QUESTION
Front
How do you find a missing side in similar figures?
Back
To find a missing side, set up a proportion using the lengths of the corresponding sides of the similar figures.
7.
FLASHCARD QUESTION
Front
What is the relationship between the sides of similar triangles?
Back
The ratios of the lengths of corresponding sides of similar triangles are equal.
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