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NWEA Math Vocabulary for RIT scores 231-240
Terms in this set (59)
acute Triangle
A triangle that contains only angles that are less than 90 degrees.
algebraic sentence
relation between 2 or more algebraic expressions that are related by signs =, <, >, ≥, ≤, ≠
arc
any unbroken part of the circumference of a circle or other curved line.
arithmetic progression
a sequence of numbers in which the difference of two consecutive numbers is the same
borrow
used in subtraction
chord
a straight line connecting two points on a circle... can never be longer than the diameter
congruent side
sides that have the same length.
convert
Rewriting a measurement with different units.
corresponding angle
Angles in the same place on different lines.
corresponding side
Matching sides of two or more polygons.
cross-section area
measure of the size of a surface region that would be exposed by making a straight cut through something, esp. at right angles to an axis
cubed
A name for a number to the third power., The product in which a number is a factor three times. Two cubed is 8 because 2 x 2 x 2 = 8.
cubic inch
the volume of a cube with edges that all measure one inch
data point
A point on a graph showing the location of a piece of data.
discount
A reduction in price on purchases during a stated period of time
ellipse
A elongated circle, or oval shape, the shape of the planets orbit.
equality
a statement that two quantities are equal; equation
expanded notation
A way of writing numbers in which the numbers are written to show the place value of each digit (639 = 600 + 30 + 9)
exponent
A number that tells how many times the base is multiplied by itself
frequency
How often
half hour
a unit of time equal to 30 minutes
horizontal
Going straight across from side to side
incline
A flat, slanted surface.
interior angle
angles inside of a polygon
interval
the difference between two numbers on the scale
kilowatt
a unit of power equal to 1000 watts
lower quartile
The lower 25% (or the 25th percentile) of an ordered set of data
magnitude
Greatness of size, strength, or importance
matrix
A rectangular arrangement of numbers into horizontal and vertical rows and columns.
meters per minute
distance traveled in a minute measured in meters
minus
subtract
outlier
Any data point that sticks out. NOT all data sets have one.
parabola
a U shaped line on a graph
percentile
A point on a ranking scale of 0 to 100.
powers
exponents
quadrupled
4 times
range
Distance between highest and lowest scores in a set of data.
right triangle
A triangle that has a 90 degree angle.
sample
A relatively small proportion of people who are chosen in a survey so as to be representative of the whole.
scale factor
A factor by which a figure is enlarged or reduced.
scale model
A three-dimensional representation of a larger or smaller object.
scientific Notation
A mathematical method of writing numbers using powers of 10., 6,310,000 Move the decimal point to change your number so that so that it is equal/greater than 1 but less than 10. (6.31 x 10 to the 6th power)
secant
A line that intersects a circle in two points
slope
A measure of the steepness of a line. rise over run
solution
the answer to a math problem
square pyramid
three-dimensional geometric figure with a square base and four triangular sides that connect at one point; a pyramid with a square base
square region
Area whose boundaries are a square
successive
following in order
system of equations
two or more equations with the same variables
tangent
A line in the plane of a circle that intersects the circle in exactly one point.
tax
a sum of money demanded by a government for its support or for specific facilities or services, levied upon incomes, property, sales,
tenth power
using one number as a factor ten times; 10^10=10000000000
tenths
The first place value after a decimal point. Is the largest decimal value. It takes 10 tenths to make a whole.
term
A number, a variable, or the product of a number and a variable
tessellation
A repeating pattern of shapes that completely cover a plane without overlaps or gaps. Also called a tiling.
tripled
multiplying by three
upper quartile
the 75th percentile (splits off the highest 25% of data from the lowest 75%)
vector
A quantity that has both size and direction
vertical lines
lines that run up and down
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