__C__

**Capacity** A measure of the volume of a container.

**Cardinal
number **The number obtained by counting the elements contained in a set

**Cell**
Each section of a spreadsheet. A cell contains data, labels or formulas.

**Center
**(of circle) A circle is the set of all points in a plane which are the same
distance from a given point.

The
given point is called the center of the circle

**Center
**The point that lies equidistant from all points on a circle or a sphere.

**Centigrade
**The temperature scale used as a standard scale in science and industry, on
which the freezing point

of
water is O' and the boiling point is 100°'

**Central
angle **An angle whose vertex is the center of a circle and whose sides are
determined by two radii of the circle

changing its
shape or size.

**Chord
** A segment that joins two points on a circle.

**Circle
** A plane figure made up of all points that are the same
distance from a given point in the plane.

**Circumference
** The perimeter of a circle.

**Closed
curve **A curve whose representation begins and ends at the same Point

**Closed
curve **A curve whose representation begins and ends at the same point

**Closure
property of addition **(for whole numbers) The sum of any two whole numbers is
a whole number

**Closure
property of addition **(for whole numbers) The sum of any two whole numbers is
whole number

**Cluster**
Data that are grouped close together.

**Clustering**
A method used to estimate decimal sums and differences by rounding a group of
closely related numbers

to
the same whole number.

**Coefficients
** The numbers preceding the powers of the variable in a
polynomial. In x *-
x *+ , the coefficients are

and
-. coincides exactly with a point on the other side. A figure is symmetric with respect to a point 0 if for each

point
A on the figure there is a point B on __the__ figure for which 0 is the
midpoint of *AB.*

**Collinear
points ** Two or more points that
lie on the same line.

**Combination
** An arrangement of a group of things in which order does not
matter.

**Common
denominator** A common multiple of the denominators of two or more fractions.

**Common
factor **A common factor of two counting numbers is a whole number which

**Common
multiple **A number which is a multiple of each of two or more numbers

**Commutative
operation **An operation in which a change in order of numbers does not change
the answer

**Commutative
property of addition** For any numbers *a*
and* b*, *a + b* = *b
+ a*.

**Commutative
property of multiplication** For any numbers *a*
and* b*, *a
*x* b* = *b *x* a*.

**Commutative
property of multiplication** The order in which two numbers are multiplied
does not affect the product

**Complementary
angles **Two angles whose sum is 90'. Either
angle is said to be the complement of the other

**Complementary
angles **Two angles whose sum is 900. Either
angle is said to be the complement of the other

**Complex
fractions **A fraction that has a fraction for its numerator or its
denominator (or both)

**Composite
number** Any whole number greater than one that has more than two factors.

**Conditional
probability ** The
probability that an event B will occur given that an event A has occurred.

**Cone
** A closed figure formed by a circular region and a curved
surface that comes to a point.

**Congruent
angles **Two angles that have the same measure.

**Congruent
figures** Figures that have the same size and shape.

**Congruent
line segments **Two or more line segments that are exactly the same length.

**Congruent
sides** Sides that have the same measure.

**Coordinate
** The number paired with a point on the number line.

**Coordinate
plane ** A plane marked with
two perpendicular number lines, used to graph ordered pairs of
numbers.

**Coordinate
system** Two perpendicular lines that intersect at their zero points to form a
coordinate system.

**Coplanar
** Lying in the same plane.

**Corresponding
angles ** One of four pairs of
angles formed when two lines are cut by a transversal.

**Cosine
of an angle ** If *LA
*is one of the acute angles in a right triangle, the cosine of *LA *cos A is the ratio of the

length
of the side adjacent to *LA *to the
length of the hypotenuse.

**Counterexample
**An example which shows that a general statement is false (59)

**Counting
numbers **The set of positive integers which is represented by: *C=*{1,
2, 3,…}

**Cross
product** If the cross products in a ratio are equal then the ratio forms a
proportion. In the proportion

2/3
= 8/12, the cross products are 2 x 12 and 3 x 8.

**Cube
**A rectangular solid having all its edges equal

**Cup**
A unit of capacity equal to 8 fluid ounces.

**Curve
**A set of points which can be represented on paper by one continuous mark
without retracing

**Cylinder
** A geometric solid with two parallel bases that are
congruent and one curved surface joining the bases.