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Is daar ‘n spesiale woord vir die stippellyn in een van die vlieërs in die skets?

Het ek goeie werk gelewer in hierdie deel?

2. Sylengtes

Bestudeer nou al die verskillende weergawes van die ses soorte vierhoeke. Meet die sye so akkuraat as moontlik om uit te vind of daar sye is met gelyke lengtes, en merk hulle op die sketse. In hierdie parallelogram is die teenoorstaande sye gelyk, want hulle is gemerk met die klein strepies.

- Is ‘n ruit net ‘n parallelogram met vier gelyke sye?

3. Ewewydige sye

Soos jy sekerlik weet, bly ewewydige lyne altyd ewe ver van mekaar af. Dit beteken dat hulle nooit ontmoet nie, al maak jy hulle ook hoe lank. Hulle hoef nie ewe lank te wees nie. Jy weet reeds hoe om ewewydige lyne met klein pyltjies aan te dui.

Nou moet jy ewewydige lyne soek in al jou vierhoeke – dalk moet jy ‘n bietjie meetwerk doen. Dis nie maklik nie, maar as jy konsentreer en metodies te werk gaan, sal jy vorder. Merk dié wat jy vind.

- As jy net een sy van enige trapesium kon verander, sou jy dit ‘n parallelogram kon maak? Hoe moet jy die sy verander?

4. Binnehoekgroottes

Dit is maklik om die binnehoeke met jou gradeboog te meet. Skryf die groottes in op elke skets en soek dan gelyke hoeke en regte hoeke. Merk die gelyke hoeke soos in die skets van die parallelogram hier langsaan.

- Tel die binnehoekgroottes van elke vierhoek bymekaar en skryf die antwoord langs die vierhoek. Verbaas die antwoord jou?

5. Diagonale

Diagonale of hoeklyne word van een hoek na die teenoorstaande hoek getrek. Teken al die hoeklyne van al die vierhoeke (partykeer sal hulle saamval met die simmetrie–lyne).

Meet die hoeklyne om uit te vind in watter vierhoeke die hoeklyne gelyke lengtes het. Merk dié wat eenders is, soos jy gelyke sye gemerk het.

Gebruik jou gradeboog en meet noukeurig teen watter hoek die hoeklyne mekaar kruis, en skryf die waardes in op die sketse. Let op waar hierdie hoeke 90° is.

Die hoeklyne verdeel ook die binnehoeke. Meet hierdie hoeke wat so gevorm word, skryf die waardes in, en soek daardie gevalle waar die hoeklyne die binnehoeke presies halveer.

6. Tabelleer jou bevindings:

Voltooi die volgende tabel (om jou resultate op te som) van al die eienskappe van elke vierkant wat jy ondersoek het.

Maak seker dat jou waarnemings vir alle weergawes van dieselfde vorm geld. Byvoorbeeld, een trapesium het dalk gelyke hoeklyne, maar geld dit vir alle trapesiums? As jy vind dat ‘n ruit twee gelyke hoeklyne het, is die regte naam daarvoor wel “ruit”?

Hierdie tabel is vol nuttige inligting. Maak seker al die inskrywings is korrek, en hou dit vir die volgende oefeninge.

Vierkant Ruit Parallelo-gram Reghoek Trapesium Vlieër
Aantal simmetrie–lyne
Alle sye gelyk
2 pare teenoorstaande sye gelyk
2 pare aanliggende sye gelyk
2 pare ewewydige sye
Slegs 1 paar ewewydige sye
Geen ewewydige sye
Alle binnehoeke gelyk
2 pare teenoorstaande binnehoeke gelyk
Slegs 1 paar teenoorstaande hoeke gelyk
Hoeklyne altyd gelyk
Hoeklyne loodreg op mekaar
Beide hoeklyne halveer binnehoeke
Slegs een hoeklyn halveer binnehoeke
Beide hoeklyne halveer oppervlakte van vierhoek
Slegs een hoeklyn halveer oppervlakte
Hoeklyne halveer mekaar

Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris 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
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
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 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11055/1.1
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