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Wiskunde

Ruimte en vorm

Opvoeders afdeling

Memorandum

15.2 (a) konkaaf

  1. konkaaf
  2. konveks

16.1 (a) ruit

(b) trapesium

(c) oktogoon (8-hoek)

(d) vierhoek

veelhoek

(e) heksagoon (6-hoek)

(f) heptagoon (7-hoek)

(g) pentagoon (5-hoek)

(h) parallelogram

16.2

16.3 108°

17.1 OOREENKOMSTE

* 4 ewe lang sye

sye

* hoeklyne halveer mekaar

  • 4 hoeke

VERSKILLE

* ruit se hoeke nie 90° nie

17.2 OOREENKOMSTE

* het 2 pare ewe lang sye

* 2 teenoorstaande sye is ewe lank /

* het 4 hoeke

* hoeklyne halveer mekaar /

VERSKILLE

* parallelogram se hoeke nie 90 ° nie/

18.

(a) vlieër

(b) trapesium

20.2 plafonne; hekke; dakkappe; brûe; steierwerk

Leerders afdeling

Inhoud

Aktiwiteit: veelhoeke [lu 3.1, lu 2.3]

15. VEELHOEKE

15.1 Het jy geweet?

Meetkundige vorms wat deur reguit lyne omsluit word, noem ons veelhoeke . Dit bestaan uit sye , hoeke en hoekpunte .

15.2 Het jy ook geweet?

’n Veelhoek is konveks as al die lyne wat enige twee hoekpunte verbind binne die veelhoek val.

Al die binnehoeke is skerp- of stomp-hoeke.

As enige lyn wat twee hoekpunte verbind buite ’n veelhoek val, is die veelhoek konkaaf.

Een of meer van die binnehoeke is ’n inspringende hoek.

15.2.1 Is die volgende veelhoeke konveks of konkaaf?

a)

_________________________________

b)

_________________________________

c)

_________________________________

15.3 Onthou ook!

’n Reëlmatige veelhoek se sye is almal ewe lank en die hoeke is almal ewe groot.

Hoe meer sye ’n reëlmatige veelhoek het, hoe groter is sy binnehoeke.

’n Onreëlmatige veelhoek se sye is almal verskillende lengtes.

15.4 LET WEL!

Ons kan die grootte van die hoeke van ’n reëlmatige veelhoek met behulp van ’n formule bereken:

Grootte van elke hoek =
(aantal sye – 2) × 180°
aantal sye

bv. Seshoek:

16.1 Werk saam met ’n maat. Kan julle sê wat elkeen van die volgende veelhoeke genoem word? Skryf die naam binne-in elke figuur.

a)

b)

c)

d)

e)

f)

g)

h)

16.2 Bereken die grootte van elke hoek van die aghoek (oktogoon)

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

16.3 Wat is die grootte van elke hoek van ’n vyfhoek? (pentagoon)

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

17.1 Werk in groepe van drie. Sny stroke van stewige karton of gebruik roomys-stokkies. Maak gaatjies op die punte en heg die stroke met splitpennetjies. Bou ’n vierkant.

Vergelyk nou die vierkant met die ruit en kyk of julle die volgende kan voltooi:

  • Druk op die hoekpunt en verander dit in ’n ruit:

OOREENKOMSTE

tussen ruit en vierkant

_____________________________________________________________________

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
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
Google
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
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
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 ?
Bob Reply
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
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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