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A number wich is the same left to right and right to left: 34543.

One of the conic sections.

V: vertex;

F: Focus.

A solid whose faces are all parallelograms.

A quadrilateral with opposite sides that are parallel.

Simbols used, for example, in algebraic expressions.

A 15-sided polygon.

A five-sided polygon.

Part of 100.

Percent to decimal: 34% = .45;

Decimal to percent: 2.7 = 210%.

A point that divides a set of data (arranged in ascending or
descending order) into two parts: about n% of the data lie
before the n^{th} percentile, the rest is above it. The
50^{th} percentile is also called the 2^{nd}
quartile.

A whole number that is the square of an integer.

Arrangements of list where the order is important. See also Combinations.

See Circle graph.

It refers to the value of each poisiton or place in a number. In
3245 3 is in the thousands place.

Names of places values: ... billions (10^{9}), hundred
millions (10^{8}), ten millions (10^{7}),
millions (10^{6}), hundred thousands (10^{5}),
ten thousands (10^{4}), thosands (10^{3}),
hundreds (10^{2}), tens (10^{1}), ones
(10^{0}), tenths (10^{-1}), hundredths
(10^{-2}), thosandths (10^{-3}), ten thousandths
(10^{-4}), ...

A plane taht divides a 3-D object into 2 parts, each a mirror image of the other.

The positivity or negativity of the variable.

A closed 2-D figure made up of line segments (at least 3).

A 3-D object that has polygons as its faces. The intersection of any two faces is an edge.

An expression consisting of the sum of one or more monomials.

A power: *a ^{b}*;

An integer greater than 1 whose only positive factors ar 1 and the number itself.

A solid with two congruent polygons as bases in parallel planes. All other faces are parallelograms. It is named according to the shape of its bases.

See Multiplication.

The set of all couples formed by pairing every member of one set with every member of another set.

See Fraction.

A subset different from the null set and the parent set.

An equality of two ratios: *a : b = c : d*.

A circular (or semicircular) device subdivided into 360 (or 180) equal parts, and used for measuring angles.

A solid with a polygon as base and all other faces triangular with a common vertex.

A set of three natural numbers that can be the sides of a polygon.

copyright 2000 et seq. maddalena falanga & luciano battaia

first published on september 01 2003 - last updated on september 01
2003