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Tennessee Academic Vocabulary – Eighth Grade Math
Curriculum Area:
WORD
DEFINITION
Adjacent (angle
relationship)
Angles immediately next to
each other
Alternate exterior
angle
Alternate exterior angles are
on opposite sides of the
transversal, but outside the
parallel lines
Alternate interior
angle
Alternate interior angles are
two congruent interior angles
that lie on different parallel
lines and on opposite sides of
a transversal.
complementary
Two angles whose sum is 90
degrees
corresponding
Corresponding angles are angles
CURRICULUM OPPORTUNITIES
NUMBER OF
EXPOSURES
that are in the same position; they
are made by lines cutting through
two or more other lines
Cost per unit
Unit rate; A unit rate compares
a quantity to its unit of
measure.
dilation
Dilation is a similarity
transformation in which a
figure is enlarged or reduced
using a scale factor , without
altering the center.
Distance formula
(d=rt)
The length between two points
(or objects)
Distributive
property
(algebraic)
Multiplying a number is the
same as multiplying its
addends by the number, then
adding the products
A product can be written as,
the sum of, or difference
between, two products
Experimental
probability
Experimental probability of an
event is the ratio of the
number of times the event
occurs to the total number of
trials.
exterior
The angle formed outside a
polygon when one side is
extended
infinite
Unable to be counted,
unlimited; opposite to finite
intercept
In mathematics, an intercept is
the coordinate of the point at
which a curve intersects an
axis. For example, an xintercept or a y-intercept.
interior
An angle within two lines
when they are crossed by a
third line
Line of best fit
(conceptual)
A line of best fit is a straight
line that best represents the
data on a scatter plot.
This line may pass through
some of the points, none of
the points, or all of the points.
Nonlinear
equation
Containing a variable with an
exponent other than one.
Used of an equation.
Perfect square
an integer which is the square
of some other integer, i.e. can
be written in the form n2 for
some integer n (and because
of this a square is always
nonnegative). Thus a perfect
square always has a square
root that has no decimal
expansion.
an algebraic expression that
can be factored as the square
of some other expression, e.g.
a2 ± 2ab + b2 = (a ± b)2
Pythagorean
theorem
The area of the square built
upon the hypotenuse of a
right-angled triangle is equal
to the sum of the areas of the
squares upon the remaining
sides
Scientific notation
A way of writing very large or
very small numbers using a
number between 1 and 10
multiplied by a power of ten
sequences
An ordered set of numbers,
shapes, or other mathematical
objects, arranged according to
a rule
Slope intercept
form
Slope-intercept form is
when a line is in the form
y = mx + b
where m is the slope and b
is the y-intercept.
Square root
A number when multiplied by
itself gives the original number
supplementary
Two angles whose sum is 180
degrees
Theoretical
probability
Theoretical Probability of an
event is the number of ways
that the event can occur,
divided by the total number of
outcomes.
Vertical angles
Pair of angles directly
opposite each other, formed
by the intersection of straight
lines
Vertical line test
Vertical Line Test is a test to
determine if a relation or its
graph is a function or not. For
a relation or graph to be a
function, it can have at most a
single y-value for each xvalue. Thus, a vertical line
drawn at any x-position on the
graph of a function will
intersect the graph at most
once.