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57 terms

8th Grade TAKS Math Vocabulary

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annual
occurring once each year ; yearly
approximate
not exact,but close enough to be reasonably correct
base
a number multiplied by itself as indicated from the exponent (the base number is to be multiplied by itself as many times as the exponent says)
best estimate
not exact, but close to exact amount
calculate
(v.) to find out by adding, subtracting, multiplying, or dividing; to figure out by reason or logic
capacity
the amount a container can hold
circumference
The distance around a circle
congruent
same shape and same size
consecutive
following in order or without interruption
coordinate plane
a grid formed by two number lines that intersect at their zero points. The two axes meet at the ordered pair (0, 0) and divide the plane into four quadrants
corresponding sides
Two sides that are in the same position in the original and the image.
data
Facts, figures, and other evidence gathered through observations.
diagonal
a line that slants; connecting two non-adjoining vertices
dilate
To enlarge in all directions.
dimensions
length, width, and height
doubled
multiplyed by two
edge
line along which two planes of a solid figure meet
enlargement
Making a new image that is bigger than the original figure
estimate
to figure out; to determine roughly; to calculate; a rough guess as to size, value, etc.; an opinion
exclude
leave out
expression
the part of a number sentence that combines numbers and operations, but doesn't have an equal sign.
generate
to produce or create
inaccurate
not correct or reasonable
irregular figure
a figure with noncongruent sides and interior angles
lateral area
the sum of the areas of the lateral faces of a solid; go around the sides, not the bases
mean
The average (add all values and divide by how many there are)
median
The middle number in a list. Put numbers in order FIRST. If there are 2 numbers in the middle, add them and divide by 2.
mode
the number that appears the most times
multiples
the product of two factors
nth term
generlization that is used to describe any given number in a sequence
origin
the point of intersection of coordinate axes
parallel
lines that will never meet, no matter how long you stretch them (like railroad tracks!)
perimeter
the distance around the outside (add up all the sides)
potential
posible, able to happen, something that can develop
prism
has to have 2 bases that are identical and all other faces are rectangles
product
answer to a multiplication problem
pyramid
Three dimensional figure with triangluar faces that meet at a vertex. The edges form a point at the top. Named for the shape of the base
quotient
the answer of a division problem
random
by chance, not planned or prearranged; irregular
range
to find this, you subtract the smallest number from the biggest
ratios
a ratio is a comparison of two quantities; it is sometimes expressed as a fraction.
reduction
Making a new image that is smaller than the original figure
reflection
a transformation that produces the miror image of a geometric figure over a line of reflection
revenue
Total Amount of money a business takes in during a given period selling goods and services
rotation
The original image is the square labeled ABDC. The image after rotating the square 45 degrees (counterclockwise) about its center gives the square labeled A'B'D'C'.
scale factor
In a transformation, the number by which the distance of the preimage from the center of dilation is multiplied to determine the distance of the image point from its center.
scientific notation
There are two parts of the scientific notation. The first part is a number between 1-10. The second part is a power of ten. example: 2.25 * 10^4
set
a group of things of the same kind that belong together and are so used
similar
same shape, but different size
squared
Any number or variable with a 2 for an exponent is said to be squared.
total surface area
the sum of all the areas of the faces and bases of a solid figure
transformation
Some transformations, like dilation, affect the size of the figure. Other transformations are translations, reflections, and rotations.
trend
a pattern over time, such as increasing, decreasing, or staying the same, that is shown by data in part or all of the graph
twice
two times, double
valid
well-supported by facts; true
vertex
The point where 2 rays meet in an angle or 2 or more line segments meet in plane figures, or 3 or more sides meet in solid figures
vertical
line going up and down