I enjoyed this very much. Traditional Technical drawing, on A3 or A2 paper, with 3H and 4H pencils, NEVER HB!, wooden T squares and acrylic set squares, was my absolute favourite lesson in school. Great to refresh my mind on techniques such as these. Try as I might I could never get my compass accuracy to perfectly complete the circle back to the origin. Great fun though.
@dipakpalvankar574010 ай бұрын
gg🎂🎂qwwqwqwqqq😂
@iaingill48794 ай бұрын
Why not HB?
@roberthorwat67474 ай бұрын
@@iaingill4879 HB is only for perfect draughtsmen who never need to use an eraser. I was not a perfect draughtsman🤣
@iaingill48794 ай бұрын
@@roberthorwat6747 I'm new to geometry and art - what is the best pencil type to use?
@p4ul1w4uli Жыл бұрын
Thank you very much for this. Economical layout and clear commentary. Gotta love geometry.
@giogiochka5716 Жыл бұрын
This is not a regular heptagon, as already pointed out, it's only a good approximation, your title should read. Your videos are very well done and interesting to watch. Congratulations for your outstanding work.
@rosiefay72836 жыл бұрын
This is Albrecht Dürer's approximation.
@ArthurGeometry6 жыл бұрын
Thanks for your information.
@ArthurGeometry6 жыл бұрын
This is a tutorial to draw with set-squares and compass, not mathematical calculation. I already know.
@ffggddss5 жыл бұрын
@CogitoErgoCogitoSum Actually, a heptadecagon (17 sides) *can* be constructed classically. (It's *very* complicated!) What he's attempting here, is a heptagon (7 sides), which cannot. This is, however, a pretty decent approximation, good for most practical purposes. Fred
@davegillett71354 жыл бұрын
@CogitoErgoCogitoSum The subtleties seem lost unfortunately. I would argue that if the construction isn't exact then the heptagon isn't a regular heptagon. . There's a wonderful book called Ruler and Compass. It explains the subject far better than I can.
@bryantthe3 жыл бұрын
I have reported this video as "spam or misleading"
@Caramel777884 жыл бұрын
You are the best. After trying different gurus; you were the only one i could follow without hesitation. New subscriber. I need my geo accurate and simple. I dont want to stress out. Thanks so much!
@WaterMelon-xt4jw2 жыл бұрын
this is way simpler than the 5 corner, wow. Anyways thank you for making this video its helps allot with math
@SamVidovich3 жыл бұрын
A good approximation! Thank you, very nice method.
@nikitasrivastava15522 жыл бұрын
Thankyou from India!☆☆☆☆☆
@SunFlower-ts9ow Жыл бұрын
Enjoyed it so much.
@taetaebuns2 жыл бұрын
you really saved me from my maths teacher..i really appreciate going to recommend this to everyone in my class 🤣🤣🤣🤣
@lojainabsi8704 Жыл бұрын
Thank you, I benefited a lot from you❤
@pdias84698 ай бұрын
Thanks. It’s perfect.
@bravoromeojohn Жыл бұрын
Varying the thickness of your compasses lead by a mere 0.2, and mine came out spot on...needle to needle 🤷 Much appreciated!
@swapnilvirani59494 жыл бұрын
Thanks sir its really worth for every engineering students huge thanks again
@vincentkeya90773 жыл бұрын
my friend you didnt try it
@alexzuma2024. Жыл бұрын
the side-length of a regular n-sided polygon in a unit circle is s = 2*sin(180º/n)
@marksabol87588 жыл бұрын
Of course, this method is not exact. The square root of 3 subtends an angle (51.32 degrees) that is very close but not equal to 360/7 = 51.43 degrees.
@L6FT8 жыл бұрын
Thank you. That was the math I was looking for to describe why my compass doesn't get it exact to the needle.
@habibaaamirali7 жыл бұрын
Mark Sabol i
@ffggddss5 жыл бұрын
To put it in other terms, the side-length of a regular heptagon in a unit circle is s =2 sin(180º/7) = 0.867767478... while the length used here is s' = ½√3 = 0.866025404... The ratio is s'/s = 0.997992... So it's short by a mere part in 500. Fred
@SurveyorEngineer4 жыл бұрын
@@ffggddss I cane up with exactly the same numbers you did.
@baconsky16253 жыл бұрын
You're destroying all the magic. Good job fun destroyer :(
@bcvc33653 жыл бұрын
Nice 👍 thanks
@neurotheology7053 жыл бұрын
Thank you for sharing
@bradykarriah Жыл бұрын
This helped alot thank you
@adrianhope47962 жыл бұрын
I like this construction very much I have used it to create 7 sided vessels. BUT I still do not see WHY it works. Please tell me
@calvinjackson8110 Жыл бұрын
It doesn't work. To the natural human eye it looks as if he has constructed an exact regular heptagon. But he has not and it can be proven. It is convincing to the eye, but the mathematics says otherwise.
@hyderlatifpremji96272 жыл бұрын
Amazing!!!🤩🤩😍😍
@AkashNayak-gu8fx4 жыл бұрын
Thank you sir
@jj_esturi7 жыл бұрын
Thanks for explaining me
@Hollywood_Movies5672 жыл бұрын
Thank you
@anukrit5 жыл бұрын
thank you !!! Helped a lot
@mrunalsurve72632 жыл бұрын
Thanks ❣
@mariocrespo48834 жыл бұрын
Good video Arthur. Greetings from Spain.
@gurbaken57932 жыл бұрын
It is very simple and more accurate
@sg26574 жыл бұрын
Lots of love from India and please make in Hindi language
@ceciliaonyehanere90795 жыл бұрын
Nice one. It helped me a lot. Love your explanations.👍👍👍😘
@Jole082 жыл бұрын
Thanks bro
@justherenow28006 жыл бұрын
Pretty quick accuracy, thanks
@klebo19624 жыл бұрын
Viva Pedro Antonio
@Anonymous-nw3gn4 жыл бұрын
The regular heptagon is the simplest regular polygon that can't be constructed with only a compass and straightedge
@danielegwurube65444 жыл бұрын
exactly? because I did before with a compass and straight edge
It's a Heptagon... Just not a REGULAR Heptagon. It's Off by 0.2%, an approximation attributed centuries ago by Albrecht Dürer, as noted by some others here, and documented here in Wikipedia: en.wikipedia.org/wiki/Heptagon#Approximation
@JimBalter9 ай бұрын
@@michaelkrupa131 "It's a Heptagon" Nonsense. You could pick any length for the side and then just connect the last two points regardless of their distance. But *this* construction does not create a heptagon inscribed in the circle.
@stayfrosty52706 жыл бұрын
This really help me a lot
@vishnudimbar87723 жыл бұрын
Good night sweet dream 😴😴😴
@abdillahiosmanomar96126 жыл бұрын
Thank u million times very helpfull
@aniladkine9985 жыл бұрын
Thank-you for showing correct Regular heptagon
@davegillett71354 жыл бұрын
Have you not read the other comments?
@official-obama3 жыл бұрын
It’s an approximation
@gideonlapidus8996 Жыл бұрын
How can i prove this construction? Is there a proof?
@CoolToysOfficial6 жыл бұрын
Thank you!
@AMITKUMAR-yc1yb6 жыл бұрын
Thanks a lot sir, very easy method.
@pintificate4 жыл бұрын
This demonstration is not accurate, and should be labelled as such. It's a nice approximation if you want to draw pretty pictures, but the radius Q-M is too large. A trap for young players. Please correct this misinformation. .
@DarkonXBL4 жыл бұрын
🤣🤣🤣 ok
@russellfroggatt4 жыл бұрын
Been watching EEV Blog?
@larryshawabcelectrical8 жыл бұрын
Excellent...
@ARC9284 жыл бұрын
Is this mathematically accurate Heptagon?
@carnotaurussastrei25364 жыл бұрын
No, its impossible to draw a totally accurate heptagon
@vincentkeya90773 жыл бұрын
no
@michaelkrupa1312 жыл бұрын
It's a Heptagon... Just not a REGULAR Heptagon. It's Off by 0.2%, an approximation created centuries ago by Albrecht Dürer, as noted by some others, and documented here in Wikipedia: en.wikipedia.org/wiki/Heptagon#Approximation
@davidbrahi14854 жыл бұрын
That's wonderful
@michaelweiske7025 жыл бұрын
How accurate is this video? A regular heptagon: l=2*r*sin(pi/7) In the video: MQ=r*cos(pi/3)=r*sqrt(3)/2 Does 2*r*sin(pi/7)=r*sqrt(3)/2? Divide both sides by r: 2*sin(pi/7)=sqrt(3)/2 Divide both sides by 2: sin(pi/7)=sqrt(3)/4 Use a calculator cause f*ck it: .4338837391...=/=.4330127019...
@pintificate4 жыл бұрын
Totally inaccurate.
@DarkonXBL4 жыл бұрын
@@pintificate prove it
@michaelkrupa1312 жыл бұрын
@@DarkonXBL Proved Long Ago!
@michaelkrupa1312 жыл бұрын
Excellent!
@Unknown-zd8us2 жыл бұрын
I'm generation z and I'm losing my mind on this math, can y'all teach me?
@AkashNayak-gu8fx4 жыл бұрын
Thank you so much
@smokeythegaming84163 жыл бұрын
Why mine came out with only 6 sides I tried it in different cm every time I draw it it has the same answer
@official-obama3 жыл бұрын
It is not perfect
@bhushanpatil36145 жыл бұрын
Nice video helpfull
@obioraivenso85186 жыл бұрын
THANKS. VERY HELPFUL
@KRT0547 жыл бұрын
You can not draw an accurate heptagon using your method. If you really want an accurate heptagon with 51.42857142857... degrees of accuracy then you need stacked planetary gears with ratios based on multiples of 2,3 and 5 with regards to gear teeth. No kidding!
@TheRojo3874 жыл бұрын
Only failing mathematical idealism.
@arvindarvindpotliya78805 жыл бұрын
Nice to
@Mittali6 жыл бұрын
Easy and yes, it's helpful. Thank you! ❤️😊
@evdokiastergiannis69482 жыл бұрын
I tried this 4 times... i'm always off a few mm.... why is this. I did it with great accuracy each time
@Pencil0fDoom2 жыл бұрын
Because there is a difference of .11 degrees between the angle subtended by the sqrt of 3 and 360/7.
@shanmukhaamara29723 жыл бұрын
Drawn well bro it is easy to draw now 🤗
@official-obama3 жыл бұрын
If you want it to be perfect then get a stamp
@cc.78706 жыл бұрын
At least this video save my ass on my homework like goddamn
@official-obama3 жыл бұрын
It’s an approximation
@exefus5 жыл бұрын
Thanks helped a lot.
@marrabellmoon78913 жыл бұрын
Easy
@apunctg3 жыл бұрын
THIS IS DEFINITELY NOT ACCURATE ! ... try drawing it up in CAD ... it will give you an error of 0.8 degrees! - if you draw a circle with a 1m radius the error with this method is 1.35 cm - definitely not acceptable for engineering
@official-obama3 жыл бұрын
It’s an approximation
@r4_in_space2 жыл бұрын
I "discovered" another method by kind of reverse-engineering a regular heptagon and finding some relationships between the lines and I think it works, but I'm too lazy to try and prove it now (I think I'll have to use some basic trigonometry, but I'm in the 8th grade, so that's not happening). The only thing I know is that I didn't need to inscribe the heptagon in a circle to do it. Edit: the side lenght I used is arbitrary, but corresponds to about 2.95cm, so you have a sense for the scale, and I did not have a noticeable difference of inner angles from an actual heptagon. 2nd edit: I used some pithagorean theorem and quickly learned about sines and cosines and what not and it turns out my method isn't perfect as well, but I had a difference of about 0.11 degrees from the inner angle of a regular heptagon, so that's cool. Last edit: I just proved my method completely stupid and wrong just by measuring some angles. It's worse than tge one in the video, but at least it closes up nicely. And at least I learned to use sines and cossines correctly.
@mohamedemad14006 жыл бұрын
i don't get why there is so much math critics over here,listen to me ya all there is something called in phyiscs the common errors that is something that no matter how accurate we can get we won't ever be 100% accurate espacially when dealing with numbers for example the hour here at my country is 12:32 and if i checked my brother's phone it is 12:33 and my mother's phone is 12:30 now can someone explains to me why does that happen ??? although the seconds periods is designed equally in the three phones there still some glitches, maybe they are the same brand and the same model yet still no conclusion what is going on and we cannot decide which time is the completely 100% accurate yet it is not a big deal cause minute higher minute lower ain't that big of a deal especially when don't have any full 100% accurate methods which by it we can measure the time, another example the approxmation ratio which can includes that when you have number like 5.8777163536...we don't have time to write all of this shit but we can easily take a few three numbers from after the decimal and conclude it as the full number so the final would be 5.877 although this number is not equal to this number above the math laws consider it acceptable as in the Pi value we all now that pi equals 3.14159265359 but we only write it 3.14 and nobody complains about that and many mathematical problems uses 3.14 specifically not even 22/7 in order to solve the equations and the answer becomes this moment 100% accurate and there is also something you never asked yourselves when you were solving math limits problems which was when x was tending to 2 for example we write it 2 while it is better be known that the x wasnot actually 2 but it it was 1.99999999999999999..... still we called this x 2 and nobody asked why this because there is something called tolernce which is involved in dealing with decimals same problem you cannot just say somebody drawing a polygon wrong cause ✌decimals✌ we don't live in a perfect world we don't have perfect measurments we don't have perfect pencils to make perfect geomtrical shapes so before you want a perfect mind in order to make a perfect geomtrical figures as you want your heptagon angle to be accurately 51.4285714286 nah nah and acting like professionals and with a perfect godamn minds supply me with the perfect tools you perfect people are dealing with the you rule the world with your perfectness p.s thank you aurthur this video is great for education fun and amusing keep up with the good work and don't listen to anyone.
@mrmaestroukАй бұрын
Wrong
@DarkonXBL4 жыл бұрын
Y'all judging this video saying it isn't a perfect heptagon should make a video showing us how *easy* it is to draw a *perfect heptagon with a ruler and compass* . Seriously do it and I'll STFU. Geometric theory can prove perfection in numbers, but it won't show you how to do something in a practical way. This video demonstrates how to be accurate (not perfect) and practical at the same time. I'm not gonna spend 12 fucking hours drawing a heptagon just because I want it perfect.
@official-obama3 жыл бұрын
It’s probably only possible using another tool
@michaelkrupa1312 жыл бұрын
It's a Heptagon... Just not a REGULAR Heptagon. It's Off by 0.2%, an approximation created centuries ago by Albrecht Dürer, as noted by some others, and documented here in Wikipedia: en.wikipedia.org/wiki/Heptagon#Approximation
@rakeshgangnaik46755 жыл бұрын
Thank you very much ! A very very useful tip!
@vandnaverma89606 жыл бұрын
😊😊😊sahi hai
@kevinhaynes90914 жыл бұрын
I can see Pie in there...
@rmarinov57704 жыл бұрын
Charmed. Thank You. AND IF R = 17 > r = 13 ~ Aprxim. 7 Circles & r =13 ; ONE CENTRAL & R=17?
@RajenderKumar-qj3yf3 жыл бұрын
👍🏾👍🏾👍🏾👌👌👌
@neet22aspirants464 жыл бұрын
Thanks sirrr
@bryantthe4 жыл бұрын
this doesn't actually give you a regular heptagon.
@moniquezan2637 Жыл бұрын
Why
@bryantthe Жыл бұрын
@@moniquezan2637 it's an approximation. One of the sides is longer than the others.
@mariuzz34264 жыл бұрын
thanks
@mariolegaspi681 Жыл бұрын
I TRIED IT 5 TIMES, BUT I'M ALWAYS OFF A FEW mm.
@soebredden2 жыл бұрын
only for SMALL heptagons!!
@SimchaWaldman8 жыл бұрын
Somehow I believe I'm going to fail again, just like all my previous attempts with another method. Too bad this is a comuter animation.
@oldestdream20382 жыл бұрын
Thank you so much (≧∀≦)ゞ
@lakshaysethi91065 жыл бұрын
Teri video se mera hexagon ban gaya
@ultracreador4 ай бұрын
Bueno, regular no es. 😢
@mosuaibemansury17245 жыл бұрын
Jo aap ne circle banaya hai uske kiya naap hai
@542shivanithakur42 жыл бұрын
All lines are not equal
@SH-um9lu Жыл бұрын
Sorry to say, but in this way you don't construct a regular heptagon. See en.wikipedia.org/wiki/Heptagon
@ArthurGeometry Жыл бұрын
Yes, it's only an aproximation.
@zim354 Жыл бұрын
Tabbed
@anthonybond8067 жыл бұрын
perfect english Oxford XD
@kevinklemz1636 жыл бұрын
the smaller you go , the more off it is.No use to me.Thanks for wasting my time
@sumayyasumayya72823 жыл бұрын
😁😆🙄
@zim354 Жыл бұрын
Dakdake abot Obet mo
@artist-mimie5 жыл бұрын
Time wasting
@allenpryortube7 жыл бұрын
51 and 3/7 degrees. how to... hmm...
@zim354 Жыл бұрын
Iyot tako?
@elliejohnson27866 жыл бұрын
"And finally we will close our pentagon from G to A" 3:52