# 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.

how can chip be made from sand
is this allso about nanoscale material
Almas
are nano particles real
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
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Kamaluddeen
yes
narayan
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ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
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Damian
yes that's correct
Professor
I think
Professor
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nanocopper obvius
Alexandre
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Rafiq
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Damian
How we are making nano material?
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LITNING
scanning tunneling microscope
Sahil
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Santosh
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Mahi
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Rafiq
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Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
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