www.reference.com/world-view/definition-extremes-math-72d4a1f54bbc90b3

When solving proportions in math, the outer terms in the calculation are the extremes, and the middle terms are called the means. When setting the proportion equation a/b = c/d, the a and the d figures are the extremes.

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The word "mean" comes through French from Latin "medius," meaing "middle." (It is used in several ways in math, all related to the middle.) The word "extreme" comes from Latin "extremus," the superlative form of "exterus," meaning "outside"; so it means "outermost." Now it should make sense!

virtualnerd.com/geometry/similarity/ratios-proportions/means-extremes-definition

What's the Means-Extremes Property of Proportions? The means-extremes property of proportions allows you to cross multiply, taking the product of the means and setting them equal to the product of the extremes. This property comes in handy when you're trying to solve a proportion. Watch this tutorial to learn more!

www.wyzant.com/resources/blogs/14833/means_and_extremes

The two middle numbers are the means, and the two outer numbers are the extremes. To make sense of the term cross-multiply, though, you should write this proportion using fraction notation: So, we can cross-multiply the means (1 × 120) and the extremes (60 × 2) and see that the respective products are equal (1 × 120 = 120, and 60 × 2 = 120).

www.thefreedictionary.com/Extremes

Extremes synonyms, Extremes pronunciation, Extremes translation, English dictionary definition of Extremes. adj. 1. Most remote in any direction; outermost or farthest: the extreme edge of the field. 2.

www.dictionary.com/browse/extreme

Extreme definition, of a character or kind farthest removed from the ordinary or average: extreme measures. See more.

www.quora.com/What-is-the-means-extremes-property-in-math

First if you have a proportion (two equal fractions) like[math]\frac{a}{b}=\frac{c}{d}[/math] then the means are b and c and the extremes are a and d. Now the Means Extremes property is that you can cross multiply like this ad = bc and the equalit...

www.answers.com/Q/What_are_math_extremes

In short, math extreme is the highest (or lowest) value of a math function on an interval (a,b). For example, function y=x2 has minimum (extreme) for x=0 on interval (minus infinity, plus infinity).

mathworld.wolfram.com/ExtremeandMeanRatio.html

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