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math volcabulary
math foundations of algebra
12
Mathematics
9th Grade
04/01/2025

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Term
absolute value
Definition
The distance of a number from zero; the positive value of a number.
Term
acute angle
Definition
A positive angle measuring less than 90 degrees.
acute triangle
A triangle each of whose angles measures less than 90 degrees.
additive identity
The number zero is called the additive identity because the sum of zero and any number is that
number.
additive inverse
The additive inverse of any number x is the number that gives zero when added to x. The additive
inverse of 5 is -5.
adjacent angles
Two angles that share both a side and a vertex.
Term
acute triangle
Definition
A triangle each of whose angles measures less than 90 degrees.
Term
additive identity
Definition
The number zero is called the additive identity because the sum of zero and any number is that
number.
Term
additive inverse
Definition
The additive inverse of any number x is the number that gives zero when added to x. The additive
inverse of 5 is -5.
Term
adjacent angles
Definition
Two angles that share both a side and a vertex.
Term
angle
Definition
The union of two rays with a common endpoint, called the vertex.
Term
arc
Definition
A portion of the circumference of a circle.
Term
area
Definition
The number of square units that covers a shape or figure.
Term
associative property of addition
Definition
(a + b) + c = a + (b + c)
Term
associative property of multiplication
Definition
(a x b) x c = a x (b x c)
Term
average
Definition
A number that represents the characteristics of a data set.
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