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Wiskunde

Ruimte en vorm

Opvoeders afdeling

Memorandum

22.3

(a) reghoekige

(b) gelyksydige

(c) skerphoekige

(d) gelykbenige

(e) stomphoekige

22.4

(a) een stomphoek

(b) 2 sye ewe lank

(c) 3 verskillende lengtes

(d) een hoek 90°

Leerders afdeling

Inhoud

Aktiwiteit: driehoeke [lu 3.1, lu 3.2, lu 3.4, lu 4.9]

22. DRIEHOEKE

22.1 Trek die onderstaande driehoeke op grafiekpapier af. Knip hulle netjies uit. Sorteer nou saam met ’n maat die driehoeke uit in groepe. Die driehoeke in elke groep moet dieself­de eienskappe hê. Verduidelik aan die res van die klas waarom julle die driehoeke so gegroepeer het.

22.2 Het jy geweet?

Ons kan driehoeke klassifiseer op grond van hul hoeke of hul sye .

a) Skerphoekige driehoek

b) Reghoekige driehoek

c) Stomphoekige driehoek

d) Gelyksydige driehoek

Al drie sye is ewe lank

e) Ongelyksydige driehoek

Al drie sye het verskillende lengtes

f) Gelykbenige driehoek

Daar is twee ewe lang sye

22.3 Watter soort driehoeke is hieronder te sien?

a)

______________________________

b)

______________________________

c)

______________________________

d)

______________________________

e)

______________________________

22.4 Teken nou jou eie:

a) stomphoekige driehoek

b) gelykbenige driehoek

c) ongelyksydige driehoek

d) reghoekige driehoek

Assessering

Leeruitkomste 3: Die leerder is in staat om eienskappe van en verwantskappe tussen twee-dimensionele vorms en drie-dimensionele voorwerpe in ‘n verskeidenheid oriëntasies en posisies te beskryf en voor te stel.

Assesseringstandaard 3.1: Dit is duidelik wanneer die leerder meetkundige figure en drie-dimensionele voorwerpe in natuurlike en kulturele vorms en ‘n meetkundige agtergrond herken, visualiseer en benoem, insluitend dié wat vroeër behandel is;

Assesseringstandaard 3.2: Dit is duidelik wanneer die leerder meetkundige figure en drie-dimensionele voorwerpe beskryf en klassifiseer volgens eienskappe in kontekste, insluitend dié wat gebruik kan word om ‘n bewustheid van sosiale, kulturele en omgewingsake te bevorder;

Assesseringstandaard 3.4: Dit is duidelik wanneer die leerder nette ontwerp en gebruik om modelle te maak van meetkundige drie-dimensionele voorwerpe wat tot en met hierdie graad bestudeer is;

Leeruitkomste 4: Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.

Assesseringstandaard 4.9: Dit is duidelik wanneer die leerder hoeke met ‘n gradeboog akkuraat tot een graad skat, vergelyk, meet en teken.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
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
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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
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 did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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