UNIT 1TECHNICAL DRAWING

TOOLS

What’s this?

How are its sides?

Set square

It has all unequal sides.

1) What’s a ruler used for?

a) measuring anglesb) measuring straight linesc) measuring and drawing anglesd) measuring and drawing straight lines

IT’S AN OBJECT USED IN TECHNICAL DRAWING.IT’S A SCALENE TRIANGLE.ALL THREE SIDES ARE UNEQUAL.THE THREE ANGLES ARE ALL DIFFERENT IN MEASURE. THE MAIN ANGLE IS 90 DEGREES AND THE OTHER TWO ARE 30 AND 60 DEGREES RESPECTIVELY.THE SIDES THAT FORM THE RIGHT ANGLE ARE PERPENDICULAR TO EACH OTHER.IT IS USED TO DRAW PARALLEL LINES.

IT’S AN OBJECT USED IN TECHNICAL DRAWING.IT’S AN ISOSCELES TRIANGLE.TWO SIDES ARE EQUAL AND ONE OF THEM IS DIFFERENT.IT HAS TWO ANGLES OF THE SAME MEASURE AND ONE OF THEM IS DIFFERENT.THE MAIN ANGLE IS 90 DEGREES AND THE OTHER TWO ARE 45 DEGREES.THE SIDES THAT FORM THE RIGHT ANGLE ARE PERPENDICULAR TO EACH OTHER. IT IS USED TO DRAW PARALLEL LINES.

IT’S AN OBJECT USED IN TECHNICAL DRAWING. IT’S SHAPED LIKE HALF A CIRCLE / A SEMICERCLE or CIRCUMFERENCE. IT’S USED TO MEASURE THE EXACT SIZE OF AN ANGLE IN TERMES OF THE NUMBER OF DEGREES BETWEEN 0º AND 180º or 0º AND 360º THERE ARE USUALLY TWO SETS OF NUMBERS ON A PROTACTOR; ONE SET RUNNIMG FROM LEFT TO RIGHT. THE HALFWAY POINT OF EVERY PROTACTOR IS 90º, NAMELY THE RIGHT ANGLE. IT’S ONLY WRITTEN ONCE.

IT’S AN OBJECT USED IN TECHNICAL DRAWING. IT’S USED FOR DRAWING CIRCLES, ARCS, ANGLES or OTHER GEOMETRICAL CONSTRUCTIONS. IT CAN HAVE AN ADAPTER IN OTHER TO USE A FELT PEN. THERE ARE TWO ARMS IN A COMPASS. ONE ARM IS SHARP AND OTHER ARM CAN HOLD A PENCIL FOR CONSTRUCTION 

IT’S AN OBJECT USED IN TECHNICAL DRAWING.  IT’S USED FOR MEASURING AND DRAWING STRAIGHT LINES.  IT’S MARKET WITH UNITS OF MEASUREMENT CENTIMETRES AND MILLIMETRES. 

What is this? What kind of drawing is it used in? What is the name of this polygon? How are its sides? How are its angles? How many degrees do its angles have? What is it used for?

THIS IS A SET SQUARE

IT IS USED IN TECHNICAL

DRAWING

IT’S A SCALENE TRIANGLE

ALL ITS SIDES ARE UNEQUAL

THE MAIN ANGLE IS 90 DEGREES AND THE OTHER TWO ARE 30

AND 60 DEGREES RESPECTIVELY

IT IS USED FOR DRAWING

What is this? What kind of drawing is it used in? What is the name of this polygon? How are its sides? How are its angles? .What do its angles measure? What is it used for?

THIS IS A SET SQUARE

IT IS USED IN TECHNICAL DRAWING

IT’S AN ISOSCELES TRIANGLE.

IT HAS TWO EQUAL SIDES AND A DIFFERENT ONE

IT HAS TWO EQUAL ANGLES AND THE THIRD ONE IS RIGHT

THE MAIN ANGLE IS 90 DEGREES AND THE OTHER TWO ARE 45

DEGREES

IT IS USED FOR DRAWING PARALLEL LINES.

What is this? What kind of drawing is it used in? What is the name of this geometric figure? What is it used for? How many degrees can you calculate using it ?

THIS IS A PROTRACTOR

IT IS USED IN TECHNICAL DRAWING.

SEMICIRCLE

IT IS USED FOR MEASURING AND DRAWING ANGLES

YOU CAN CALCULATE FROM 0 DEGREES TO 180 DEGREES OR 180 DEGREES TO 0 DEGREES

What is this?  What kind of drawing is it used in?  What is it used for?  How is it divided? 

THIS IS A RULERIT IS USED IN TECHNICAL DRAWING.

IT IS USED FOR MEASURING AND DRAWING STRAIGHT LINES

IT’S DIVIDED IN CENTIMETRES AND MILLIMETRES

What is this? What kind of drawing is it used in? What is it used for? What does it consist of? What do you need to label a circle?

THIS IS A COMPASS

IT IS USED IN TECHNICAL DRAWING.

YOU HAVE TO USE IT TO DO CIRCLES, SEMICIRCLES, ANGLES AND

CIRCUMFERENCE

IT CONSISTS OF 2 ARMS. ONE OF THEM IS SHARP AND THE OTHER CAN HOLD A PENCIL

I NEED AN ADAPTER

What is this?

Description

What it used for?

MULTIPLE CHOICE about toolsChoose the correct answer :

1)What’s this ?a) 60º, 30º, 80º set squareb) 60º, 30º, 90º set squarec) 45º, 45º, 90º set squared) T- square

2)What’s a ruler used for?a) measuring anglesb) Measuring straight linesc) Measuring and drawing anglesd) Measuring and drawing straight lines

3)A protractor is used for...a) mesasuring anglesb) Drawing circlesc) Drawing and measuring semicirclesd) Measuring and drawing angles

4)How many right angles does a set square have?a) oneb) threec) twod) none

5)A 45 set square is ...a) An isosceles triangleb) an equilateral trianglec) a scalene triangled) a rectangle

6) A scalene triangle is a triangle in which...a) all three sides are equalb) all three sides are diferentc) two sides are equald) two sides are diferent an two sides are equal

7) Which of the instruments listed below has an adapter?a) The protractorb) the set squarec) The compassd) The ruler

8) In order to draw parallel lines you use...a) a compassb) a rulerc) a protractord) a set square

9) 90º is the half way point of every...a) compassb) rulerc) protractord) set square

10) A ruler is divided in...a) metresb) centímetresc) inchesd) centímetres and milà metres

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