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Wiskunde

Graad 8

Heelgetalle, vergelykings en meetkunde

Module 9

Klassifikasie, meet en kostruksie van hoeke

KLASOPDRAG 1

  • Kom ontdek stap vir stap meer omtrent ... Meetkunde ....klassifikasie van hoeke, meet - en konstruksie van hoeke.

1. Hoe konstrueer (teken) jy enige hoekgrootte?

Om dit te kan doen, het jy die volgende nodig:

passer, gradeboog en liniaal

Algemeen: Konstruksie van bv. A B ˆ C size 12{A { hat {B}}C} {} = 60°

  1. Begin deur ’n lyn te trek.

________________________________

  1. Maak ’n merkie op die lyn.

______I________________________

c) Sit jou gradeboog se merkie in die middel op jou merkie.

d) Lees van 0° aan die regterkant tot by die verlangde grade.

e) Benoem jou hoek korrek. [bv. A B ˆ C size 12{A { hat {B}}C} {} = 60° of B ˆ 1 size 12{ { hat {B}} rSub { size 8{1} } } {} = 60° ]

2. Hoe sal jy te werk gaan om ’n hoek van bv. 330° te konstrueer asdie gradeboog slegs hoekgroottes tot en met 180° kan meet?Skryf jou plan hier neer:

3. Konstrueer nou die volgende hoeke, klassifiseer elk en dui die grense van grade aan. Bv. 60° -- skerphoeke (klassifikasie) --- 0°< x <90° (grense van °) Grense van ° word as volg gelees: x groter as 0° en kleiner as 90°

Hoek Skets Klassifikasie(soort hoek) Grense van °
3.1 P Q ˆ R size 12{P { hat {Q}}R} {} = 75°
3.2 A B ˆ C size 12{A { hat {B}}C} {} = 125°
3.3 H F ˆ G size 12{H { hat {F}}G} {} = 325°
3.4 C D ˆ E size 12{C { hat {D}}E} {} = 180°
3.5 K L ˆ M size 12{K { hat {L}}M} {} = 90°
3.6 R S ˆ T size 12{R { hat {S}}T} {} = 360°

HUISWERKOPDRAG 1 en 2

  1. Daar is hoeke oral rondom jou ....Bepaal die grootte van elk van die aangeduide hoeke (m.b.v. jou gradeboog),skryf die grootte by die spesifiek hoek neer enklassifiseer die hoeke.

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

1.10

1.11

1.12

1.13

1.14

1.15

1.16

2. Konstrueer die volgende hoeke deur van jou liniaal en gradeboog gebruik te maak.

2.1 ’n Horlosie met ’n hoek van 45° tussen die twee syfers.

2.2 ’n Sonbed met ’n hoek van 160°

2.3 ’n Helikopter wat teen ’n hoek van 35° met horisontaal daal.

2.4 ’n Leeslamp met hoeke 115° en 65°

Assessering

LU 3
Ruimte en Vorm (Meetkunde)Die leerder is in staat om eienskappe van en verwantskappe tussen twee- dimensionele vorms en drie-dimensionele voorwerpe in ’n verskeidenheid oriënta-sies en posisies te beskryf en voor te stel.
Dit word bewys as die leerder:
3.2 in kontekste insluitend sodaniges wat gebruik word om sosiale-, kulturele- en omgewingsbewustheid aan te kweek, meetkundige figure in terme van kenmerke beskryf en klassifiseer, insluitend:3.2.1 sye, hoeke en diagonale (hoeklyne) en hulle verwantskappe, met die klem op driehoeke en vierhoeke (bv. soorte driehoeke en vierhoeke);3.3 woordeskat gebruik om parallelle te beskryf wat deur ‘n dwarslyn, loodlyne en snylyne gekruis word, asook driehoeke na aanleiding van hoekverwantskappe (bv. vertikaal teenoorstaande, ooreenkomstig).
LU 4
MetingDie leerder is in staat om gepaste meeteenhede, -instrumente en formules in ’n verskeidenheid kontekste te gebruik.
Dit word bewys as die leerder:
4.7 hoeke met behulp van ’n gradeboog akkuraat tot een graad kan skat, vergelyk, meet en teken.

Memorandum

KLASWERKOPDRAG 1

2. 360 0 – 330 0 = 30 0

size 12{ and } {} Konstrueer 30 0

  • size 12{ and } {} Skerphoek 0 0 size 12{∠} {} Q size 12{∠} {} 90 0
  • size 12{ and } {} Stomphoek 90 0 size 12{∠} {} B size 12{∠} {} 180 0
  • size 12{ and } {} Reflexangle 180 0 size 12{∠} {} F size 12{∠} {} 360 0
  • size 12{ and } {} Gestrekte hoek D = 180 0
  • size 12{ and } {} Regtehoek L = 90 0
  • Omwentelingshoek S = 360 0

Huiswerkopdrag 1 en 2

  • Skerphoek size 12{∠} {}
  • Stomphoek size 12{∠} {}
  • Stomphoek size 12{∠} {}
  • Inspringendehoek size 12{∠} {}
  • Stomphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Inspringende hoek size 12{∠} {}
  • Skerphoek size 12{∠} {}
  • Stomphoek size 12{∠} {}
  • Stomphoek size 12{∠} {} en Skerphoek size 12{∠} {}
  • Stomphoek size 12{∠} {} en Skerphoek size 12{∠} {}

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
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
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
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 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11033/1.1
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