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Math Vocabulary
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Terms in this set (42)
scalene triangle
triangle with no equal sides
equilateral triangle
triangle with 3 sides equal
Isosceles triangle
triangle with 2 sides equal
acute angle
angle whose measure is less than 90
obtuse angle
angle whose measure is greater than 90
straight angle
angle that measures 180
measures of center
mean, mode, median
measure of variation
range
mean as fair share
two for you, two for me
mean
average; add numbers and divide by how many numbers
mode
most often
range
high number minus low number
median
number in the middle
circumference
measure around the circle; perimeter
chord
starts at one side of circle and goes to other side
radius
from the center to the outside edge
diameter
starts at one side of circle and goes through the center to the other side of the circle
trapezoid
quadrilateral with 1 pair of parallel sides
rhombus
quadrilateral with 4 sides equal (no right angles)
parallelogram
quadrilateral with opposite sides parallel
rectangle
quadrilateral with 2 pairs of parallel sides
square
quadrilateral with 4 sides equal and 4 right angles
right triangle
triangle with 1 right angle
acute triangle
triangle with all angles less than 90
obtuse triangle
triangle with an angle greater than 90
equivalent fraction
fractions that are equal to each other
distributive property
2( 5 + 3) = (2 x 5) + ( 2 x 3)
order of operations
PEMDADS
prime number
number whose factors are 1 and itself -
exactly 2 factors
composite number
number that has more than 2 factors
even number
number that is divisible by 2 - no leftovers
odd number
number when divided by 2 has 1 leftover
product
answer to a multiplication problem
difference
answer to a subtraction problem
sum
answer to an addition problem
quotient
answer to a division problem
open sentence
3 + b = 7 (number, operation, variable, =)
variable expression
4 + s (number, operation, variable)
variable
letter or symbol that represents an unknown amount - p
perimeter
distance (measure) around a shape
area
how many square units inside a shape
volume
how many cubes inside a 3-d shape
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