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Terms in this set (62)
absolute value
The distance of a number from zero;to the positive value of a number
acute angle
a positive measuring less than 90*
acute triangle
a triangle that each of whose angels measure less than 90*
arc
a portion of the circumfrence of a circle
area
the number of square units needed to cover a flat surface
absolute value
The distance a number is from zero on a number line
addend
a number that is added to another number
area
the size of a surface
array
an arrangement of objects in rows and columns
centi
1/100
common denominator
A denominator that is the same in two or more fractions.
complementary angle
Two angles whose sum is 90 degree, 2 angles that equal 90 degrees
composite number
a whole number greater than 1 that has positive factors other than 1 and itself
deca
Prefix for ten
decagon
polygon with 10 sides
denominator
the bottom number in a fraction
diameter
the length of a straight line passing through the center of a circle and connecting two points on the circumference
dividen
the number divided
divisor
the number by which a dividend is divided
dodecagon
a twelve-sided polygon
equilateral triangle
a triangle with three equal sides
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)
exponet
represents the number of times the base is used as a factor. In 7 to the 4th power, seven is the base and 4 is the exponent
factor
a number that is multiplied by another number to find a product
factorial
a special type of multiplication principle where the answer of 5! is equal to 5x4x3x2x1 = 120
function
An input-output relationship that has exactly one output for each input; An equation written with two variables where only one output exists for each input; example: y = 2x +1
geometric sequence
a pattern of numbers made by multiplying the same number ex) 2, 6, 18... (*3)
golden ratio
single line divided into two unequal segments (the ratio of the smaller part to the larger is equal to the ratio of the larger part to the whole)
greater than
When a number is larger than the other number. Example 65 > 56
greatest common factor
The largest number that is a common divisor ( a number that divides evenly into the numbers) of a given set of numbers. Ex: GCF of 28 and 36 = 4. The largest number that goes into both 28 and 36 is 4.
improper fraction
A fraction in which the numerator is greater than or equal to the denominator; examples: 5/5 or 7/4
integer
Any positive or negative whole, counting number. -3, -2, -1, 0, 1, 2, etc.
irrational number
A real number that cannot be expressed as a rational number
isosceles triangle
a triangle with two equal sides
least common denominator
LCD, or the least common multiple of the denominators of two or more fractions ex: the LCD of 1/2 and 1/4 is 4
least common multiple
The smallest number is the multiple of both numbers. (the LCM of 15 and 6 is 30)
less than
When a number is smaller than the other number. Example 107 < 215
line segment
part of a line with two endpoints
linear equation
an equation whose graph is a straight line.
mean
the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores
median
The middle number in an ordered set of data, or the average of the two middle numbers when the set has two middle numbers
mixed fraction
a whole number and a fraction. Example 1 1/2
mode
The number that occurs most often in a set of data
natural number
The set of number 1,2,3,4..... Also called counting number.
numerator
the top number in a fraction
oblique
at an angle
obtuse triangle
A triangle where one angle measures over 90 degrees.
open sentence
a sentence that may be true or false depending on what values are substituted for the variables
order of operation
the order that you do a math sentence in. (Parentheses, Multiplication, Division, Addition, Subtraction) (PMDAS) (Pardon My Dear Aunt Sally) () x ÷ + -
ordered pair
A pair of numbers (a,b) used to indicate a position on a coordinate plane. The first number indicates the horizontal coordinate; the second number indicates the vertical coordinate.
palindrome
a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam,
parallel
lying in the same direction and always the same distance apart
parallelogram
n., a shape that is made up of sides that are parralel to one another.
perpendicular
at right angles
Pi
The numerical value of the ratio of the circumference of a circle to its diameter of approximately 3.14159.
power
a mathematical notation indicating the number of times a quantity is multiplied by itself
prime factor
a factor that is a prime number. (1, 2, and 5 are prime factors of 20.)
prime number
is a whole number greater then 1 that has exactly two factors, one and itself (7,11,29)
product
a quantity obtained by multiplication
quotient
the number obtained by division
range
The difference between the greatest number and the least number in a set of data.
ratio
a comparison of 2 numbers by division
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