reading+and+writing+definitions

**Here we will read and write definitions and descriptions**
 * Wow 5pts [[image:sorciere.gif]] **

**Definitions**
A definition is a rethorical pattern you use to conceptualize words. Definitions usually have a term to be defined, a general class word and a characteristic or characteristics. Example A dog (term to be defined) is an animal (general class word) that barks has four legs and a tail. (characteristics)

=Description= A description is a writing form used to create an impression of an object, person, place, event, process, mechanism, etc. You can describe people, objects, animals, plants, or you can also describe how an event happened, how a mechanism operates, etcetera. In a description you find many ** adjectives ** which are the words that will characterize any thing you want to describe. __Example 1:__ In an **equilateral triangle**, all sides are of equal length. An equilateral triangle is also an equiangular polygon, i.e. all its internal angles are equal—namely, 60°; it is a regular polygon. This description was taken from the following web page: [] __Example 2:__ A polygon that is not convex is called **concave**.[|[2]] A concave polygon will always have an interior angle with a measure that is greater than 180 degrees. It is possible to cut a concave polygon into a set of convex polygons This description was taken from the following web page: [] == =Assignment= I. Now select 5 definitions from the on-line mathematics dictionary at [], [|http://www.math.com/school/glossary/glossindex.html], [], or from any other math glossary or dictionary and copy them. Your job will be to identify: a. the term to be defined b. the general class word and c. the characteristics

1. __Ciphers__ are __codes__ for __writing secret messages__ a. Cipher b. Codes c. For writing secret messages

2. __Functions__ that __stay the same no matter what the variable does__ are called __constant functions__ a. Constant functions b. Functions c. Stay the same no matter what the variable does

3. A __tessellation__ is a repeated __geometric design__ that __covers a plane without gaps or overlaps__ a. Tessellation b. Geometric design c. Covers a plane without gaps or overlaps

4. A __circle__ is defined as the __set__ of __points at a given distance (or radius) from its centre__. a. Circle b. Set c. Points at a given distance (or radius) from its centre

5. A __rotation in the plane__ is a __rigid motion__ __keeping exactly one point fixed__, called the "center" of the rotation a. Rotation in the plane b. Rigid motion c. Keeping exactly one point fixed. II. __**Using your own words**__, write 1 definition about any mathematical terms. A higher-order function is a function which takes a function as input or outputs a function. [|__http://en.wikipedia.org/wiki/Fractal__]
 * Super **
 * Kind of confusing ! **
 * III. In the text you will find when you click the link below, extract the first paragraph and please find all the characteristics of fractals and underline them. Also find the adjectives and circle them.Be careful ! ! ! **

Adjectives will be in bold letters

A fractal has been defined as "a __**rough** or **fragmented** geometric shape__ that __can be split into parts, each of which is (at least approximately) a **reduced-size** copy of the whole__," a property called self-similarity. Roots of the idea of fractals go back to the 17th century, while **mathematically rigorous** treatment of fractals can be traced back to functions studied by Karl Weierstrass, Georg Cantor and Felix Hausdorff a century later in studying functions that were continuous but not differentiable; however, the term fractal was coined by Benoît Mandelbrot in 1975 and was derived from the Latin frāctus meaning "broken" or "fractured." A mathematical fractal is __based on an equation that undergoes iteration, a form of feedback based on recursion__. There are several examples of fractals, which __are defined as portraying exact self-similarity, quasi self-similarity, or statistical self-similarity__. While fractals are a **mathematical** construct, they are __found in nature__, which has led to their inclusion in artwork. They are __useful in medicine, soil mechanics, seismology, and **technical** analysis.__

1. There is a definition of fractals there. Please identify it and identify its components.

A __fractal__ has been defined as "a rough or fragmented __geometric shape__ __that can be split into parts, each of which is (at least approximately) a reduced-size copy of the whole__," a. Fractal b. Geometric shape c. That can be split into parts, each of which is (at least approximately) a reduced-size copy of the whole 2. There is a description there, please identify it and tell me how you found it. What helped you when locating it.
 * Super **

A mathematical fractal is based on an equation that undergoes iteration, a form of feedback based on recursion. There are several examples of fractals, which are defined as portraying exact self-similarity, quasi self-similarity, or statistical self-similarity. While fractals are a mathematical construct, they are found in nature, which has led to their inclusion in artwork. They are useful in medicine, soil mechanics, seismology, and technical analysis

I found it because it gave information about the concept but didn't exactly define it, so it wasn't a definition, and it mentioned characteristics of the concept.
 * Super **
 * I **** V. Now write a description of any mathematical word or topic. **

The set of the natural numbers is composed __of__ ** on ** the numbers we use to count, such as 1, 2, 3, and so on. It's a subset of the real numbers, and it's different from the set of the rational numbers because, in the natural numbers set, there is a finite amount of numbers between any two numbers, but there is a** N ** infinite amount of numbers between any two numbers in the rational number set. As soon as you have all these ready, please paste it in your wiki.
 * Super **

For additional information about writing definitions, please visit the following site []

[]