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# Algebra Glossary - C a|b|c|d|e|f|g|h|i|l|m|n|o|p|q|r|s|t|u|v|w|x|y|z

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# center of a circle:

The point in a circle from which the distance to any point on the circle is a constant.

# center of an ellipse:

The intersection of the axes of symmetry.

# central tendency of a set of numbers:

A number considered to be the most typical or representative of that set.

# circle:

The set of all points in a plane such that the distance (radius) from a given point (center of the circle) is constant.

# circular functions:

Periodic functions related to the unit circle.

# closure:

A set of numbers is closed under an operation if combining any two elements in the set by that operation yields a number in the set.

# coefficient:

The constant factor of a monomial.

# common ratio:

The common ratio is a constant.

# complement of an event:

Event A is a com- plement of event B with respect to sample spaceS if and only if A and 8 include all outcomes of S, and A and B have no outcomes in common.

# completing the square:

A method used to solve a quadratic equation in which a number is added to both sides of the equation so that one side is a perfect square.

# complex conjugate:

For all real numbers a and b, a + bi and a - bi are complex conjugates.

# complex fraction:

A fraction that has frac- tions in either the numerator or the denominator or both.

# complex number:

A number of the form a + bi, where a and b are real numbers and i is the imaginary unit.

# components or an ordered pair:

The individual numbers in an ordered pair.

# compound inequality:

A sentence linking two conditions with "and" or "or". At least one of the conditions is an inequality.

# conic section:

A curve that has a sec- ond-degree equation and is defined in terms of the distance of its points from fixed points and/or lines. This includes circles, parabolas. ellipses and hyperbolas.

# conjugate:

Two binomials of the form (a + Nt/b) and (a - N/b). where a and b are rational numbers.

# consistent system of equations:

A system that has at least one solution.

# constant:

A number or a polynomial of degree 0.

# constant difference:

The difference be- tween successive terms in a sequence.

# constant of inverse variation:

The number k in the inverse variation Y = K/X.

# constant linear function:

A function whose equation can be written in the form y = b and whose graph is a horizontal line.

# constant term of a polynomial:

The term a which can be considered the coefficient of x.

# constant term of a quadratic equation:

The term c in the form V = ax- + bx + r.

# constant of variation:

The number k in the direct variation y = kx or in the inverse variation Y = K/X.

# continuous:

A polynomial function whose graph is smooth without "jumps".

# converge:

If there is a real number that is the value of the infinite series, the series converges.

# convex polygonal region:

A region that has a polygon with no "indentations" as a boundary.

# coordinate:

The number associated with a particular point on a number line.

# coordinate axes:

Two perpendicular lines selected in a plane.

# coordinates of a point:

The numbers of an ordered pair.

# correlation coefficient:

A number between - I and + I which is a measure of the dispersion of data points about a regression line.

# corresponding elements of matrices:

For two matrices with the same dimensions. the elements in the same row and the same column.

# cubic polynomial:

A polynomial of degree 3.

# cycle:

The graph of a periodic function through one fundamental period.

Note: The terms in this collection may not be entirely accurate.
They are for reference only.