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©1998 ThinkQuest
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©1998 ThinkQuest
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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.
PREPARING