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38 Cards in this Set
- Front
- Back
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absolute value
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distance of a # from 0 on a #line; shown by l#l
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area
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# of square units needed to cover a given surface
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difference
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result when 1 # is subtracted from another
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equation
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mathematical sentence that shows that 2 expressions are equivalent
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integers
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set of all whole #'s and their opposites
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mean
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sum of the items in a set of data divided by the number of items in the set; also called average
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median
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middle # or the mean of the 2 #'s in an ordered sit of data
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mode
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# or #'s that occur most frequently in a set of data; when all #'s occur w/ the same frequency; we say there is no ______
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origin
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point where the x-axis & the y-axis intersect on the coordinate plane
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percent
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ratio comparing a number to 100
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perimeter
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distance around a polygon
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perpendicular
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lines that intersect to form right angles
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pi
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ratio of the circumference of a circle to the length of its diameter
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product
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result when 2 or more #'s are multiplied
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quotient
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result when 1 # is divided by another
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range
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difference between the greatest & the least values in a data set
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reciprocal
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1 of 2 #'s whose product is 1
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ratio
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comparison of 2 quantities by division
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skew
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lines that lie in different planes that are neither parallel nor intersecting
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sum
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result when 2 or more #'s are added
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quadrilateral
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4-sided polygon
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regular
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polygon w/ congruent sides and angles
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irregular
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not all sides and angles are congruent
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acute triangle
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triangle w/ all angles measuring less than 90degrees
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right triangle
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triangle w/ 1 right angle
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obtuse triangle
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triangle w/ 1 obtuse angle
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equilateral triangle
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triangle w/ all congruent sides
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isosceles triangle
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triangle w/ at least 2 congruent sides
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scalene triangle
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triangle w/ no congruent sides
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A=lw
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area of a rectangle
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A=1/2bh
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area of a triangle
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A=pi r square
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area of a circle
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A=bh
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area of parallelogram
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V=lwh
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volume of a rectangular prism
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C=pi d
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circumference of a circle
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180 degrees
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degrees in 1 triangle
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isolate the variable
inverse operations |
goal when solving equations
how do we do that? |
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22/7 or 3.14
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approximations for pi
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