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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

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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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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