Angles
an angle whose measure is 90 degrees
right angle
lines that never cross and stay the same distance apart
the number above the fraction bar in a fraction
numerator
a whole number greater than 1 that has exactly two factors, itself and 1
prime number
the distance around the outside of any polygon
perimeter
an angle whose measure is between 0 degrees and 90 degrees
acute angle
two lines that intersect to form right angles
perpendicular lines
the number below the fraction bar in a fraction
denominator
a whole number greater than 1 with more than 2 factors
composite number
the number of square units needed to cover a surface or figure
area
an angle whose measure is between 90 degrees and 180 degrees
obtuse angle
lines that pass through the same point
intersecting lines
a number that has a whole-number part and a fractional part
mixed number
in division, the number that is left after the division is complete
remainder
the position of a digit in a number that is used to determine the value of the digit
place value
an angle that turns 1/360 of a circle
one-degree angle
a triangle whose sides all have the same length
equilateral triangle
fractions that name the same part of a whole region, length, or set
equivalent fractions
the number that is the result of multiplying two or more factors
product
numbers that are multiplied to get a product
factors
an angle measuring 180 degrees
straight angle
a triangle with two sides of the same length
isosceles triangle
a fraction whose numerator is greater than or equal to its denominator
improper fraction
the number that is the result of dividing one quantity by another
quotient
a process that determines which multiple of 10, 100, 1,000, etc., a number is closest to
rounding