SET SQUARE AND DEFINITION OF SKETCH/OUTLINE

TOOLS FOR DRAWING LINES

RULER

We use the ruler to measure the length of a segment. The markings on a ruler show centimeters (a long line) and millimeters (a short line).

PROTRACTOR

We use a protractor to measure and draw angles. It´s usually a semicircle with markings to show 0º to 180º.

1  SET SQUARE

Set squares are triangular “rulers” for drawing parallel and perpendicular lines.

-          A right-angles isosceles triangle (escuadra) with 45º, 45º and 90º angles.

-          A right-angled scalene triangle (cartabón) with 90º, 30º and 60º angles.

2   COMPASS

This instrument is used to draw circules and arcs, and to copy segments.

EXERCISES

Draw the following angles using the set square: 30º, 60º, 90º, 105º, 120º, 135º, 150º y 180º.

Make a pattern with circles, following these instructions:
a. Draw a straight line 15 cm long.
b. Divide into 3 segments.
c. Use each mark as the centre of a circle with 2 cm radius.
d. Draw other circles inside with 1,5 cm radius.
e. Colour the pattern.

SKETCH AND OUTLINE

Sketch in an initial drawing which shows the fundamental elements of a design and reflects its main concept.

The outline gives more specific information, including measurements, materials, ways of connecting the pieces, etc.

Vocabulary

Translate into Spanish:

-          Parallel

-          Perpendicular

-          Arc

-          Radius

-          Diameter

-          Stencil

-          Hypotenuse

-          Sketch

-          Outline

-          Freehand

-          Diagram

-          Dot

-          Measure (to)

-          Measurements

-          Material

-          Scale

-          Reduce

-          Enlarge

-          Scale ruler 

TRANSLATE INTO ENGLISH
- Angulo
- Alzado
- Planta
- Perfil derecho
- Perfil izquierdo
- Primeros auxilios
- Dibujo
- Peligroso
- Guantes
- Casco
- Señal
- Forma
- Tamaño
- Rotulador
- Goma de borrar
- Escuadra
-Cartabon
- Transportador de ángulos
- Dibujo Tecnico
- Regla
- Cinturon de seguridad