Ratios and Proportions flashcards

Question 1

What is a ratio?

Accepted Answer

A ratio compares two quantities by division. It can be written as $a:b$, $\frac{a}{b}$, or “$a$ to $b$”, with $b
eq 0$.

Question 2

State the cross multiplication property for $\frac{a}{b}=\frac{c}{d}$.

Accepted Answer

If $\frac{a}{b}=\frac{c}{d}$ (with $b,d
eq 0$), then $ad=bc$.

Question 3

In similar figures, how are corresponding side lengths related?

Accepted Answer

Corresponding side lengths are proportional: if the scale factor from Figure A to B is $k$, then $\frac{	ext{side in B}}{	ext{matching side in A}}=k$ for all corresponding sides.

Ratios and Proportions flashcards

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