
hypotenuse
the side of a right triangle opposite the right angle

circumference
the length of the closed curve of a circle

supplementary
functioning in a supporting capacity

perimeter
a line enclosing a plane area

cone
a shape with a circular base and sides tapering to a point

cylinder
a surface generated by rotating a line around a fixed line

ellipsoid
a surface whose plane sections are all ellipses or circles

pyramid
a polyhedron having a polygonal base and triangular sides

torus
a ringshaped surface generated by rotating a circle around an axis that does not intersect the circle

parallelogram
a quadrilateral whose opposite sides are parallel and equal

trapezoid
a quadrilateral with one pair of parallel sides

acute angle
an angle less than 90 degrees but more than 0 degrees

obtuse angle
an angle between 90 and 180 degrees

perpendicular
intersecting at or forming right angles

congruent
corresponding in character or kind

slope
be at an angle

isosceles triangle
a triangle with two equal sides

scalene triangle
a triangle with no two sides of equal length

bisect
cut in half or cut in two

Pythagorean
of or relating to Pythagoras or his geometry

equilateral triangle
a threesided regular polygon

quadrilateral
a foursided polygon

cube
a threedimensional figure with six equal squares as faces

sector
a plane figure bounded by two radii and the arc of a circle

secant
a straight line that intersects a curve at two or more points

diameter
the length of a straight line through the center of a circle

inscribed
written on or in a surface

equidistant
exactly as far from one point as from another

chord
a straight line connecting two points on a curve

rectangular
having four right angles

ordinate
the value of a coordinate on the vertical axis

abscissa
the value of a coordinate on the horizontal axis

counterclockwise
in a direction opposite to the direction in which the hands of a clock move

intercept
seize, interrupt, or stop something on its way

fraction
the quotient of two rational numbers

numerator
the dividend of a fraction

denominator
the divisor of a fraction

reciprocal
concerning each of two or more persons or things

absolute value
a real number regardless of its sign

ratio
relation with respect to comparative quantity or magnitude

proportional
having a constant ratio

inverse
turned backward in order or nature or effect

pound
16 ounces avoirdupois

inch
a unit of length equal to onetwelfth of a foot

index
a numerical scale used to compare variables with one another

commutative
independent of order; as in e.g. "a x b = b x a"

cent
a fractional monetary unit of several countries

penny
a coin worth onehundredth of the value of the basic unit

nickel
a United States coin worth one twentieth of a dollar

dime
a United States coin worth one tenth of a dollar

quarter
United States or Canadian coin worth one fourth of a dollar

revenue
the entire amount of income before any deductions are made

interest
a fixed charge for borrowing money

progression
the act of moving forward, as toward a goal

arithmetic
mathematics dealing with numerical calculations

arithmetic progression
(mathematics) a progression in which a constant is added to each term in order to obtain the next term

arithmetic mean
the sum of the values of a random variable divided by the number of values

geometric progression
(mathematics) a progression in which each term is multiplied by a constant in order to obtain the next term

consecutive
one after the other

geometric series
a geometric progression written as a sum

inclusive
encompassing much or everything

toss
the act of flipping a coin

die
lose all bodily functions necessary to sustain life

exclusive
admitting or accepting only a particular group

mutually exclusive
unable to be true or exist at the same time

deck
a pack of 52 playing cards

flip
the act of throwing a coin

straight angle
an angle of 180 degrees

foursided
having four sides

tangent
a line that touches a curve at only one point

intersect
meet or cross at a point; overlap

proportion
relation with respect to comparative quantity or magnitude