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FOA flashcards
100
Mathematics
9th Grade
04/08/2025
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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.
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.
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.
Term
axis of symmetry
 Definition
Term
base
 Definition
Term
bisect
 Definition
Term
Box and whisker plot
 Definition
Term
Cartesian coordinates
 Definition
Term
central angle
 Definition
Term
cord
 Definition
Term
circle
 Definition
Term
circumference
 Definition
Term
coefficient
 Definition
Term
collinear
 Definition
Term
combination
 Definition
Term
common factor
 Definition
Term
common multiple
 Definition
Term
commutative property of addition
 Definition
Term
commutative property of multiplication
 Definition
Term
complementary angles
 Definition
Term
composite number
 Definition
Term
cone
 Definition
Term
congruent
 Definition
Term
constant
 Definition
Term
coordinate plane
 Definition
Term
coplanar
 Definition
Term
counting numbers
 Definition
Term
counting principle
 Definition
Term
cross product
 Definition
Term
cube
 Definition
Term
cylinder
 Definition
Term
data
 Definition
Term
decimal number
 Definition
Term
degree
 Definition
Term
denominator
 Definition
Term
dependent events
 Definition
Term
diagonal
 Definition
Term
diameter
 Definition
Term
difference
 Definition
Term
digit
 Definition
Term
distributive property
 Definition
Term
dividend
 Definition
Term
divisor
 Definition
Term
ellipse
 Definition
Term
equation
 Definition
Term
equilateral triangle
 Definition
Term
equivalent equations
 Definition
Term
equivalent fractions
 Definition
Term
error of measurement
 Definition
Term
evaluate
 Definition
Term
even number
 Definition
Term
event
 Definition
Term
exponent
 Definition
Term
equivalent fractions
 Definition
Term
factor
 Definition
Term
factoring
 Definition
Term
face
 Definition
Term
formula
 Definition
Term
fraction
 Definition
Term
frequency
 Definition
Term
frequency table
 Definition
Term
graph
 Definition
Term
greatest common factor (GCF)
 Definition
Term
horizontal
 Definition
Term
hypotenuse
 Definition
Term
identity property of addition
 Definition
Term
identity property of multiplication
 Definition
Term
improper fraction
 Definition
Term
independent events
 Definition
Term
inequality
 Definition
Term
infinity
 Definition
Term
inscribed angle
 Definition
Term
inscribed polygon
 Definition
Term
integers
 Definition
Term
intercept
 Definition
Term
intercepted arc
 Definition
Term
interpolation
 Definition
Term
intersecting lines
 Definition
Term
inverse
 Definition
Term
inverse operations
 Definition
Term
irrational number
 Definition
Term
isosceles triangle
 Definition
Term
least common denominator
 Definition
Term
least common multiple
 Definition
Term
like fractions
 Definition
Term
line
 Definition
Term
line of symmetry
 Definition
Term
line segment
 Definition
Term
locus
 Definition
Term
logic
 Definition
Term
lowest terms
 Definition
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