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Write down the answers next to the right numbers.

Assignment 9:

Drawing a figure

[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.

Assignment 10:

Draw circles 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.

Assignment 11:

Using a ruler and a pencil, re-draw the top design on squared paper

[lo 1.7]

Assignment 12:

Proportion

[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.

Assignment 13:

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.

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
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
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
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
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how to synthesize TiO2 nanoparticles by chemical methods
Zubear
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Technology grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10979/1.2
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