# 2.1 Modern measuring instuments  (Page 2/3)

 Page 2 / 3

Write down the answers next to the right numbers.

## [lo 1.2]

Answer the following questions by writing down only the name of the correct geometric figure.

1. Which figure has four right angles each?
2. Which figure’s four sides are of equal length?
3. Which figure has two pairs of equal sides?
4. Which figures’ opposite sides are parallel?
5. Which figure has three acute angles?
6. Which figure has no angles?
7. Calculate the CIRCUMFERENCE of each figure in mm

(i)

(ii)

(iii)

(iv) (Hint: Use a length of wool.)

h. Use your pencil and a square grid (p. 15) and draw:

1. a square with a circumference of 160 mm;
2. a square of which each of the sides is 50 mm;
3. a rectangle of which the length is 30 mm and the breadth is 50 mm;
4. a triangle of which one side is 40 mm and two sides are 30 mm each;
5. a circle (without the grid).

(HINT: Here you may use any aid, or you may use a pair of COMPASSES.)

Background:

What is a pair of compasses?

The following parts of a circle are important: the centre, the radius and the diameter.

If you know the length or the radius or diameter of a circle, it is easy to draw a circle

with a set of compasses.

## [lo 1.8]

a. A circle with a diameter of 100 mm

b. A circle with a radius of 30 mm

Remember:

A set of compasses is not a toy and it could be dangerous if you don’t handle it with care.

## [lo 1.8]

Try to re-draw the sketch in Assignment 11 on a clean page.

NB: All drawings must be done in pencil.

SELF-assessment of measuring and drawing with measuring-instruments

S elf-assessment

1. The learner’s performance does not meet the requirement of the LO.
2. The learner’s performance partially meets the requirement of the LO.
3. The learner’s performance meets the requirement of the LO.
4. The learner’s performance exceeds the requirement of the LO.

## When you receive a copy of the assignment grid, make a tick under the appropriate number

 1 2 3 4 1. I am able to measure the lengths of line sections with a ruler. 2. I am able to recognise a horizontal line. 3. I am able to recognise a vertical line. 4. I am able to recognise a diagonal line. 5. I am able to recognise a curved line. 6. I am able to draw a horizontal line with a ruler. 7. I am able to draw a vertical line with a ruler. 8. I am able to recognise parallel lines. 9. I am able to recognise a right angle. 10. I am able to draw a right angle with a ruler. 11. I am able to recognise an acute angle. 12. I am able to draw an acute angle with a ruler. 13. I am able to recognise an obtuse angle. 14. I am able to draw an obtuse angle with a ruler. 15. I know what a geometrical figure is. 16. I am able to recognise a square. 17. I am able to draw a square with a ruler. 18. I am able to recognise a rectangle. 19. I am able to draw a rectangle with a ruler. 20. I am able to recognise a triangle. 21. I am able to draw a triangle with a ruler. 22. I am able to draw a circle with a set of compasses. 23. I am able to draw a circle without a set of compasses, but with a ruler. 24. I am able to re-draw a two-dimensional design on squared paper with a ruler and set of compasses. 25. I am able to re-draw a two-dimensional design from a squared page onto a clean page with a ruler and a set of compasses.

Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
what does nano mean?
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Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
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Maciej
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
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NANO
what is fullerene does it is used to make bukky balls
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
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Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
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Virgil
is Bucky paper clear?
CYNTHIA
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NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
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Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
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