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23 terms

Math Vocabulary 2A 5th Grade

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prime
a number that has no factor but itself and 1
difference
the number that remains after subtraction
area
the number of square units needed to cover a flat surface; the extent of a 2-dimensional surface enclosed within a boundary
numerator
the top number of a fraction that tells how many parts of a whole are being considered
line segment
part of a line with two endpoints
ray
(mathematics) a straight line extending from a point
angle
The space between two rays, lines, or planes that intersect
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
straight angle
an angle of 180 degrees
hexagon
a six-sided polygon
quadrilateral
a four-sided polygon
octagon
an eight-sided polygon
greatest common factor
The largest factor that two or more numbers have in common
volume
the amount of 3-dimensional space occupied by an object
perpendicular lines
Two lines that intersect to form right angles
constant
A value that does not change
ordered pair
A pair of numbers, (x, y), that indicate the position of a point on a coordinate plane.
vertical axis
the y axis; goes up and down on al line graph
rotation
A transformation that turns a figure about a fixed point at a given angle and a given direction.
equivalent fractions
fractions that have different numerators and denominators, but have the same value
elapsed time
the amount of time that passes from the start to the end of an activity
composite
a number that has more than two factors
sum
a quantity obtained by addition