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SAT Prep Math Definitions
SAT Prep Math Definitions
Absolute value
The "size" of a number, measured by how far it is from zero
Area
The number of unit squares that it would take to exactly cover the figure
Circumference
The distance around the circle, which you can find using the formula 2pir
Complementary angles
Two angles who had up to 90°
Consecutive numbers
Integers that are adjacent to each other on the number line
Difference
The answer in a subtraction problem
Digit
A number 0-9 as part of a real number - 35 is a 2 digit number whose second digit is 5
Directly proportional
Two quantities that vary with each other, they are related by multiplying as in A=kB for some constant k
Distinct
Different from another item to which it is compared
Divisible
Evenly divisible with no remained
Domain
All the values that you can legally plug into a function for x
Equilateral triangle
A triangle with all sides and angles equal
Even numbers
Any integer that is divisible by 2
Factor
The integers that can be multiples together to return the original integer
Function
A rule for associating elements of one set with elements of another set; must give only one answer for y for every X value
Greatest common factor (GCF)
The largest factor that the two numbers have in common
Integer
The positive counting numbers, their negative counterparts, and zero
Inversely proportional
Two quantities that are related according to an equation such as A=k/B for some constant k
Isosceles triangle
A triangle with two equal sides and two equal angles
Least common multiple (LCM)
The smallest number that has both integers as factors
Midpoint
The point exactly halfway between the end points of a line segment
Multiples
Integers formed by multiplying a base integer by another integer
Parallelogram
A quadrilateral with two sets of parallel opposite sides
Perimeter
The distance around the entire outside of a plane figure
Prime numbers
An integer that is only divisible by itself and by 1
Product
The answer to a multiplication problem
Quadrilateral
A polygon with four sides
Quotient
The answer to a division problem
Range
The set of all values a function can produce for y
Reciprocal
A number produced by interchanging the numerator and denominator of a fraction
Reflection
Creating a copy nod a figure by drawing its mirror image on the other side of a specific line
Remainder
The whole number left over after you perform a division problem
Rotation
Creating a copy of a figure by rotating the figure about a fixed point
Sum
The answer to an addition problem
Supplementary angles
Two angles whose measure equal 180°
Surface area
The sum of the areas of every face of a 3-dimensional solid
Symmetry
A change (rotation or reflection) that preserves the original figure
Tangent
A line that touches a curve at precisely one point
Translation
Creating a copy of a figure by sliding it within the plane
...
The points at which the graph of an equation crosses the X axis