Lines & Angles
lines that intersect and form a 90-degree angle
perpendicular
A metric unit of measure equivalent to 1,000 grams
kilogram
The bottom number in a fraction that tells the equal number of parts in the whole
denominator
A tool used to measure angles
protractor
An angle measuring 90 degrees
a right angle
An angle measuring less than 90 degrees
acute angle
A customary unit of measurement for liquid equal to 4 quarts
gallon
The top number in a fraction that shows many parts in the whole are selected
numerator
A closed figure with 4 straight sides and 4 angles
quadrilateral
A number left over that can't be divided into equal groups
remainder
an angle that turns through 1/360th of a circle
a one-degree angle
A customary unit of measurement for liquid volume equal to 2 pints
quart
a whole number plus a fraction
mixed number
A triangle with at least two equal sides
isosceles
The answer to a multiplication problem
product
A line through a figure such that when the figure is folded along the line, two halves are created that match up exactly
line of symmetry
a triangle that includes one 90-degree angle
right triangle
A fraction which has a numerator greater than its denominator
fraction greater than 1
A line with an angle greater than 90 degrees but less than 180 degrees
obtuse angle
A whole number with at least three factors (1, the number itself, plus at least one other factor)
composite
two lines in a plane that never intersect
parallel lines
A closed shape that includes three sides of equal length and 3 equal angles
equilateral triangle
two fractions that have different numerators and denominators but the same value (for example, 1/2 and 2/4)
equivalent fractions
This special angle measures 180 degrees
straight angle
a whole number greater than 1 whose only factors are 1 and the number itself
prime number