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South Habersham Middle School 8th Grade Math Powertime Vocabulary Unit 2

Multiplicative Inverses Two numbers that when multiplied together equal 1, for example, 4 and ¼.
Perfect Square A number that has a rational number as its square root.
Radical A symbol that is used to indicate square roots.
Rational A number that can be written as the ratio of two integers with a nonzero denominator.
Scientific Notation A representation of real numbers as the product of a number between 1 and 10 and a power of 10, used primarily for very large or very small numbers.
Square Root One of two equal factors of a nonnegative number. For example, 5 is a square root of 25 because 5 • 5 = 25. Another square root of 25 is -5 because (-5) • (-5) = 25. The +5 is called the principle square root.
Variable A letter or symbol used to represent a number.
Altitude of a Triangle The perpendicular distance between a vertex of a triangle and the side opposite that vertex. Sometimes called the height of a triangle. Also, sometimes the line segment itself is referred to as this term.
Base (of a Polygon) Any side in a two-dimensional figure. Typically, however, it is the bottom side, on which the polygon "sits."
Created by: hbogue