Drawing

=**__POINTtoc__** = It is the place where there are two lines, the origin or the end of a straight line, the center of an arm or that of a tiny circle. Obviously it does not have dimensious and is designed by a capital letter or by a number. A,B,C....1,2,3....



=__**LINE**__ = It is a sucession of points. It is nameb by a small letter, a,b,c... 

There can be several types of lines:

__**STRAIGHT LINES**__
It is a sucession of points in the some directions, It has neither beginning nor end. It can be horizontal, vertical or oblique. It is named by small letter.



**__LINE CURVE__**
It is a sucession of points not planes in the same directions.

[[image:http://www.desarrollomultimedia.es/archivoimg/general/931.gif]]
__**POLYGONAL LINE**__ It is composed by straight segments joined by his ends in different directions. The segments are called sides, and the common points to two consecutive sides are named vetices.



__**HORIZONTAL LINE**__
Straight line that coincid with the direction of the lines of the horizon, so that all the points have the some level.



**__VERTICAL LINE__** Straight line that coincid with the direction of all the bodies on having fallen down, remaining represented by the direction of the thread of a plumment.



__**SLOPING LINE**__ Any straight line that is neither horizontal or vetical.

__**PERPENDICULAR STRAIGHT LINES**__
They are those that, on having be cut, the divide to the plane in four right angles (90o)



__**PARALLEL STRAIGHT LINES**__
They are those that follow the some direction and, therefore, thought they should extend, they never manage to be cut.



__**COMPETING STRAIGHT LINES**__ Those are not parallel bars; therefore they are cut in a point.



=<span style="color: #ff00ff; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**ANGLE**__ = It is the opening between two lines that come together at a point or vertex. An angle is possitive when it measures up in sense of travel opposite to the needles of the clock, in opposite case it is negative. While the opposite is not indicated, of both convez angles and concave that they define two half lines that depart from the some point, it is considered to be the mirror of them; this is the convex angle.



<span style="color: #280099; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**OPENING OF THE ANGLE**__
The angles measure uo in degress sexagesimales.Every degree it has 60 minutes and every minute has 60 seconds.


 * -We can classify the angles acording to the opening that they present:**

<span style="color: #99284c; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**RIGHT ANGLE**__ The one that measure 90o



<span style="color: #ffb515; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**OBTUSE ANGLE**__ The main of 90o



<span style="color: #000080; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**SHARP ANGLE**__ Less than 90o



<span style="color: #ff3366; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**FLAT ANGLE**__ Each of the semiplanes limited by two opposite half lines.




 * -If we abide ourselves by the position that they have between them, the angles can be:**

<span style="color: #0099ff; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**CONSECUTIVE ANGLES**__
They are those who the some vertex and a common side. Also they name continuous.



<span style="color: #198a8a; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**ADJACENT ANGLES**__
They are those consecutive angles which not common sides are straight line. His sum costs two right angles (180)



<span style="color: #5e11a6; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**ANGLES OBJECTED BY THE VERTEX**__
Those in which each one is formed by the prolongation of the sides of other one. The angles objected by the vertex are equal.



<span style="color: #ff0000; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**SUPLEMENTARY ANGLES**__ Those that added cost plain, that is to say, two right angles (180).



=<span style="color: #198a8a; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**CIRCUNFERENCE**__ = It's the closed and flat line, in that all his points equidistants of other fix (0) called center.



<span style="color: #9966cc; font-family: Trebuchet MS,sans-serif; font-size: 16pt;">__**LENGTH OF A CIRCUNFERENCE**__
Distance that is crossed on having moved on the circunference, returning to the some point.The circunference has 360o

** __RADIUS__ **
Distance of the pionts of the circunferencen to the center or of the someone.



__**ARCH**__
Part of the circunference included between two ponits.



__ **SEMICIRCUNFERENCE** __
Arch that corresponds to half a circunference



__**CENTRAL ANGLE**__
The formed for two radious.



__**ROPE**__
Denomination that is given to any segment that joins two points of the circunference.



__**DIAMETER**__
Rode that passes for the center of the circunference, the diameter is the bigest rope string and costs two times the radius



__**DRYING**__
Straight line that cuts to the circunference in two parts



__**TANGENT**__
It is any straight line that touches to the circunference in a point and only in one.



__**SEMICIRCLE**__
The half of a circle.



__**CIRCULAR WREATH**__
Partion of limited surface for two concentric circunferences.



__**LUNULA**__
Intersection of two circles. It is the surface that two dying circunference limit.



__**SEGMENT CIRCULAR**__
Portion of a circle limited by an arch and the corresponding string.



__**WRAPS CIRCULAR**__
Portion of circle limited by two parallel string

__**CIRCULAR SECTOR**__
Portion of circle included between two radius and they included.



= __**MEDIATRIZ OF ONE SEGMENT**__ = Staight line perpendicularto this one for his average point.



= __**BISECTRIX OF ANGLE**__ = Straight line that happens fos his vertex and divides it in two equal parts.



= __PLANE__ = Three not aligned points, or two straight lines that are cut, define a plane.

= __**TRIANGLE**__ = They are flat figuers limited by three straight lines that cut two to two. The points where they are cut are called vertexes and segments that join them are named sides.



Acording to this we can classify them in:

__**-EQUILATERAL TRIANGLE**__
It is that one that possesses tree sides of the same sizes.



__**-ISOSCELES TRIANGLE**__
It is that posseses two sides of equal size and unequal one



__**-TRIANGLE SCALENE**__
It is that posseses two sides of equal size and unequal one

Acording to his angles the triangles can qualify in: All his angles is main of 90 o
 * == __**ACUTE-ANGLED**__ ==

One of his angles <span style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: #ffffff none repeat scroll 0% 50%;">measures more than 90 o
 * == __**OBTUSE-ANGLED**__ ==

= __**RECTANGLE**__ = One of his angles measures 90o

= = = = = __**QUADRILATERAL**__ = They are flat figures limited by four that cut two to two, determining a few segments that are the sides of the quadrilateral one. The points where two contiguos sides meet are the vertexes in the quadrilateral ones there appears the diagonal segment that joins two not consecutive vertexes.

The quadrilaterals can quialify in:

__**PARALLELOGRAMS:**__
The sides are parallel two to two. -Square: It is that one that has four sides and four angles. -Rectangle: It is that one which four sides have the same length.

__**RHOMBUS**__
The rhombus is a polygon of four equal sides, but his four angles are different from 90o. The area of this figure is calculated by means of the formula: __**<span style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: #ffffff none repeat scroll 0% 50%;">A= ****long diagonal x minor diagonal**__ __**<span style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: #ffffff none repeat scroll 0% 50%;">2 **__



<span style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: #ffffff none repeat scroll 0% 50%;">A romboide is a parallelogram that has opening sides and angles equal.
 * A** **= base · height**



__ TRAPEZE __
The trapeze is a polygon of four sides but his four angles are different from 90o. The area of this figure is caculated by means of the formula: 2**
 * A= __[(major base + minor base) · height]__



__ - RECTANGLE TRAPEZE __
The rectangle trapeze is that one in which one of his angles measure 90o.



__ -ISOSCELES TRAPEZE __
The isosceles trapeze is that has two not paraller equal sides.

= __ OVAL __ = The oval is a closed and plane curve, composed for four circular arc equal two-two. It have two axis of the symetry perpendicular each other.



= __ OVOID __ = The ovoid is a closed and plane curve, composed for two circular arc equal and other twop unequal, it have a single axis of symmetry.

= __ SPIRAL __ = The spiral is an open and flat curve generated by a point moving uniformly along a line, while this revolves around one end with constant angular valocity.



__ SCROLL __
= = The scroll is a open and flat curve, composed by circular arc linked toguether, whose venters are the vertexs of a regular polygon: a triangle, a square..., called core.