GLOSSARY

                                                  VOCABULARY STARTER UNIT

Freckles:is a small light brown that appears on the skin exposed to the sun.

Bald: a person who hasn´t got hair.

Cobwebs:a structure built by spider with his spider silk.

HALLOWEEN

Halloween is an annual holiday, celebrated each year on October 31, that has roots in age-old European traditions. It originated with the ancient Celtic festival of Samhain, when people would light bonfires and wear costumes to ward off ghosts. In the eighth century, Pope Gregory III designated November 1 as a time to honor all saints; soon, All Saints Day incorporated some of the traditions of Samhain. The evening before was known as All Hallows Eve, and later Halloween. Over time, Halloween evolved into a day of activities like trick-or-treating and carving jack-o-lanterns. Around the world, as days grow shorter and nights get colder, people continue to usher in the season with gatherings, costumes and sweet treats.

Why do children like to dress up for Halloween? Where did this tradition come from? According to history. the Celts, drivers of this celebration used the mask to run away from ghosts.They followed this tradition, motivated by fear of the spirits and darkness.

BASIC GEOMETRY CONCEPTS

Geometry: is the science that study different elements: shapes, lines and points.

Point: is the place where two lines intersect.

Line: is a succession of infinits points.

Ray: is a line thet only have begin.

Endpoint: is the point where starts or ends a ray or a segment line.

Midpoint:is the point that is between the endpoints.

Line segment:is a line with two endpoints.

Straight line:a line whose points follow the same direction

Plane:It's a two dimensional (height and width) surface. A plane can be defined by two paralel lines.

Lenght: measure of something from end to end.

Freehand: Draw without guiding instruments.

Compass: it's an instrument to make circles and arcs

Line/Technical drawing: is a drawing with the help of supplies.

Protactor: it's an instrument to measure or draw angles.

Eraser:it's an object used to delete something

Marker: a pen having a writing point made from pressed fibres.

Ruler: it's an instrument used to draw straight lines.

                                       DEFINITIONS ABOUT ANGLES AND LINES
Parallel: two lines that never intersect
Perpendicular: two lines that intersect forming four 90º degrees angles.
Oblique: a line that it is not parallel and perpendicular.
Angle:two lines made by two rays  sharing a common endpoint.
-Types of angles
Right: two lines intersect 90º degrees
Acute: two lines intersect less than 90º degrees.
Obtuse: two lines intersect more than 90º degrees
Complet: two lines intersect 360º degrees
Flat: two lines intersect 180ºdegrees.
Nule: 0º degrees
                                      IMPORTANT DEFINITIONS ABOUT CIRCLES
Circle: is a sucession of points at the same distance to the center
Circumference:is the line around the circle.
Center: is the point that is in the middle of the circle.
Radius:is the line between the center and the circumference
Diameter: is a line that passes through the center
Chord: a line which conects two points of the circle and never pass by the center.
Arc: a segment of a circle
Arrow:is the line that is in the middle of the chord perpendicular
Tangent: is the line that only touch one point of the circle.
Outer: when a element doesn't touch the circumference.
Inner: when a element is in the circumference.
Concentric circles: circles that have the same center but different radius.
                                     DEFINITIONS ABOUT TYPES OF POLYGONS
Star polygons:is a particular polygon case with a star shape, created out of linking together non consecutive
Inscribed polygons: they are polygons place inside circle so all the vertex
Circumscribed polygons: they are polygons sorrounding a circle, being its sides tangent to the circle.
-CLASIFICATION OF POLYGONS
Convex polygons: when any line pass for two points of the shape.
Non-convex polygons:when one line through the polygon but it's cut any parts.
Equiangular: all polygons that have angles, vertex and side equals.
Equilateral: all sides of edges are of same length
Regular: all theirs vertices, angles and sides are equal.
Irregular: show different angles and length for their sides.
                                                    Polygons parts
Sides: each of line segments that form a polygon.
Vertex: the points in which to sides meet.
Diagonal: segment line that conects non consecutive vertices.
Perimeter: the path around the polygon, the adition of all its sides.
Center: it is apoint equidistance from all the vertices.
                                                     THE TRIANGLE 
Triangle: it is a flat figure with three sides and three angles.
According to the sides it can be:

• Equilateral triangle: is a triangle with sides and vertices equal
• Isosceles triangle: is atriangle with two equal sides and angles equal.
• Scalen triangle: is a triangle with 3 different sides.

According to the angles it can be:

• Right triangle: is a triangle which has one right angle.
• Obtuse triangle: is a triangle which has one angle more than 90º
• Acute triangle: is a triangle which has three angles less than 90º

                                                      QUADRILATERALS
Quadrilaterals: they are polygons with four sides and four angles

                                                      STAR POLYGONS
Los polígonos estrellados se obtienen uniendo de forma constante y no consecutiva los vertices de los poligonos regulares.
Según el número de vertices que tenga el poligono no estrellado podremos obtener: ninguno, uno, o varios polígonos estrellados.
También nos podemos encontrar que existen falsas estrellas: que están formadas por varios poligonos regulares.
                                                       THE SYMMETRY
The symmetry is a quality of some shapes which some of their parts are reflections aximmetry of others
Reflection symettry: It is shape's quality which is formed by two halves facing each other with an axis in between as if both sides were mirrow images of each other.
Symmetry axis: it is a line which divides a shape into two symmetric halves.
Central symmetry: it's the reflection of an object through a point called the symmetry center.
Geometric symmetry:  it is a kind of symmetry which follows the geometric symmetry rules.
Apparent symmetry:  it's the quality of shapes or objects which show an obvious symmetry but not every point follows the geometric symmetry rules.
Symmetrical Balance: it is a way to organize parts of an image, picture or drawing.
                                    BASIC ELEMENTS OF VISUAL REPRESENTATION
Dot: it is the smallest and most simple element in art expression, it doesn't follow the same direction. It has got different qualities like size,shape and color
The dot three dimensional capacity: is when size, shapes and colours are changed.
The dot expresive capacity: the point has an unlimited capacity to represent image and to express ideas and emotions. To do so, visual effects are used.
Optical mix: is when colours are mixed with the help of the distance. Paint isn't mixed on the palette or on the painting
Line: it can be defined as a dot in movement, it has position and direction in the space.
Zigzag line and broken lines: they are formed by several fragments of straight lines with directions.
Wavy lines: they are formed by several fragments of wavy lines.
Curly lines: they hold more curves than wavy lines and show loops.
Scribble: chaotic lines that are drawn without meaning.
Hatching: it is a way of giving tones to the areas of adrawing with parallel lines in several directions.
Cross-hatching: it is way of shading areas of a drawing or surfaces with parallel lines.
Dashed (or dotted) lines: they are lines which are not continous, formed by little traces or dots.
Blurred lines: they are very soft or vanished so they are hard to see.
Simple lines:  those that are formed by only one line.
Composite lines: they are lines composed by fragments of several straight and curved lines.