UNIT 6: THE CIRCUMFERENCE AND THE CIRCLE

Circumference

The circumference is the outline of a circle.

Circle

A circle is a flat shape made by drawing a curve that is always at the same distance from the centre. 

 

The Radius is the distance from the center to the edge.
The Diameter starts at one side of the circle, goes through the center and ends on the other side.
The Circumference is the distance around the edge of the circle, that is the outline of the circle

Note that the Diameter is twice the Radius:

Diameter = 2 × Radius

Lines

A line that goes from one point to another on the circle's circumference is called a Chord.
If that line passes through the center it is called a Diameter.
A line that "just touches" the circle as it passes by is called a Tangent.
A line that intersects the circle is called intersecting or secant line.
And a part of the circumference is called an Arc.

 Slices

There are two main "slices" of a circle. The "pizza" slice is called a sector. And the slice made by a chord is called a segment.

Common Sectors

The Quadrant and Semicircle are two special types of Sector:

	Quarter of a circle is called a Quadrant.             Half a circle is called a Semicircle.

Contra la Gravedad

Photography Exhibition

 "Contra la Gravedad"

Para que una imagen nos transmita lo que buscamos para esta exposición tenemos dos opciones:

- Disparar en el momento preciso: cuando nuestro retratado está riendo, haciendo algo divertido o gracioso, es decir, cuando el momento surge y el 

fotógrafo dispara en el momento preciso.

- Construir la escena:

. Pedir a nuestro retratado que haga algo insólito, gracioso, diferente, o algo cotidiano que sabemos que le hace feliz, y lo demuestre, para que la fotografía lo transmita.

. Además, podemos incorporar elementos que fomenten ese efecto de diversión y humor: desde algo accesorio como unas gafas, una piruleta, un sombrero, hasta pedirles que hagan un gesto inesperado, situarse en un lugar poco convencional, o añadir algo que convierta la escena en algo insólito, 

divertido y diferente.

Os dejamos, a continuación, algunos ejemplos que pueden ayudar en esta 

construcción de la escena fotografiada:

UNIT 5: GEOMETRIC SHAPES IN ART

GEOMETRIC SHAPES IN ART

ACTIVITY 1: SEVEN SHAPES PROJECT

The seven shapes Project consists of using seven different geometric shapes or the same shape repeated seven times like the following example.

  
 ACTIVITY 2: BECOME AN ARTIST USING GEOMETRIC SHAPES

Where can we find Geometry in Art? Well, this is your project. You are going to become an Artist using Geometric Shapes. Check the following Artists and base your work on one of their works of Art.  

STEPS: 

1 - You select an Artist (from the list below or a different one that you like) and search about his/her works of Art and his/her life. 

2 - You choose one of his/works of art and print it. 

3 - You became an Artist! It is not about imitating, it is about using the work of Art you printed as an inspiration for your own work of Art. 

ARTISTS USING GEOMETRIC SHAPES

- Victor Vasarely 

- Piet Mondrian

- M.C. Escher

- Wassily Kandinsky

- Kazimir Malevich

- Pablo Picasso

- George Braque

AUTUMN COLOURS AND TIPS

 TIPS FOR SURVIVING THE END OF THE FIRST TERM

 BREATH...

PHYSICAL EXERCISE...

SLEEP AT LEAST 8-9 HOURS...

EAT HEALTHY

ENJOY AUTUMN COLOURS

TAKE YOUR CAMERA OR YOUR TEMPERAS AND...

AND DO NOT FORGET TO BREATH. 

UNIT 3: ANGLES, DEFINITIONS AND BASIC CONSTRUCTIONS

UNIT 3: ANGLES

3.1 DEFINITION

In geometry, an angle is the figure formed by two rays, called the arms of the angle, sharing a common endpoint, called the vertex of the angle.

3.2. TYPES OF ANGLES

• ACUTE ANGLES (Ángulos agudos): angles smaller than right angles (less than 90°)

• RIGHT ANGLES (ángulos rectos): angles equal to 90º.

• STRAIGHT ANGLES (ángulos llanos): angles equal to 180º.

• OBTUSE ANGLES (ángulos obtusos): angles larger than a right angle and smaller than a straight angle (between 90° and 180°)

• REFLEX ANGLE (ángulo cóncavo): angles between 180º and 360º

• ROUND OR FULL ANGLES (ángulos completos) : angles equal to 360º.

  

3.2.COPYING AN ANGLE

If we want to draw an angle equal to a given one with vertex at a given point V, we must follow the next steps:

3.3.ANGLE BISECTOR

The angle bisector is a line which divides the angle in two equal parts. Each point of an angle bisector is equidistant from the sides of the angle. 

3.4. DRAWING ANGLES WITH THE SET SQUARE RULERS
 

3.5.  ADDING AND SUBTRACTING ANGLES WITH THE COMPASS

 The addition of two angles is another angle whose measure is the addition of the measures of those two angles.

The subtraction of two angles is another angle whose measure is the subtraction of the measures of those two angles.

WHAT IS THE POINT OF GEOMETRY?

Just a little bit of help for your Geometric Constructions... Making it easy! Do not forget to check these notes and these Worksheets these for extra help  (not mandatory)

Check these links, learn and enjoy with these introductory videos:

1- THE BASICS OF GEOMETRY

2- HOW TO DRAW TRIANGLES

3- HOW TO DRAW CIRCLES

4- HOW TO MAKE A SQUARE FROM A CIRCLE

5- TYPES OF TRIANGLES


POINT - LINE


PARALLEL LINES - CONVERGING LINES - ANGLE - TRIANGLES


ACUTE, RIGHT AND OBTUSE ANGLES - CIRCLE - RADIUS - CIRCUMFERENCE - DIAMETER


SQUARE - DEGREES


DEGREES IN A TRIANGLE


EQUILATERAL, ISOSCELES AND SCALENE TRIANGLES.
ACUTE, RIGHT ANGLED AND OBTUSE TRIANGLES.



POLYGONS (Wondeful video using Origami Technique)