I was taught this same method over 21 years ago, and all efforts to recall failed until I watched your video. Thank you very much for this very straight to the point video.
For those wondering why it didn't work, it's because the construction is approximate: if |AB|=1, the radius |A5| = sqrt((4+sqrt(3))/8) ≈ 0.8465, instead of sqrt((5+sqrt(5))/10) ≈ 0.8507. Still, it means 0.5% precision, so it should definitely look OK, taking line thickness into account (as the video demonstrates).
i do a lot of crafting and hate having to pay so much for so many templates. Your tutorials have saved me so much. Thank you so much for making this Grandmas budget. I have also referred your videos to other senior crafters. The guy who says it doesn't work is full of fecal matter.
Ty very much i was having a hard time on my assignment draw a perfect same angle and side pentagon u really helped me❤❤❤i sub and like im really thankful i just need to watch a hexagon one and im good tysm again😊❤❤❤❤
Thx a lot I was struggling a lot in this subject and i am writing an exam in about 1 and a half hours. But i am now positive i am going to ace it all thx to you 😁
A few years ago I searched for a method for construction of the regular pentagon which contained proof of its own veracity... I could not find one, so I came up with a new method which is impossible to forget. It starts with the Unit Circle, then finding the mid-point of the radius on the X-Axis, then add 1/2 of Root 5 to 1/2 and you get the Golden ratio on the X-Axis. Use your compass centered on the golden ratio point, and draw a circle with radius of golden ratio... Thus there will be 2 golden triangles drawn, one above the X-Axis, and one below it... The 3 points going through the Unit Circle are by definition 3 of the 5 points you need to make a regular pentagon, so just draw in the final two points. I should record a video of it, and post it on TH-cam. The base angles in an isosceles golden triangle are 72 degrees, which is 1/5th of 360 degrees...! 1/2 of root 5 is obtained by making the line-segment between points (1/2, 0) and (0, 1), then just use Pythagorean Theorem to confirm.
This looks very convincing, yet it turns out to be an approximation. If the base length AB is 1, then the height of point 5, h5 = (1+sqrt(3))/4; The angle we want is a= 2pi / 5. But in the drawing you think you should get tan(a/2) =2/(1+sqrt(3)); So a = 2 arctan[2/(1+sqrt(3))]; which gives a= 1.2638 However, 2pi/5 is 1.2566. It's only about 0.57 percent off. I got a little suspicious because this seemed such an easy construction. Too easy to be accurate 🙂 But pretty nice anyways.
Well i guess i need to find a video explain the middle point method then come back when you placed the compass on 6 where is the compass set just random? Depend on the compass distance spot 5 could be out in space, ive Watched 3 different channels on how to draw a pentagon and every video theres a question i do appreciate you talking the other videos play music donr talk and just start slapping lines down and readjusting the compass and the title says SUPER EASY, probably is once you learn how
This method does not work I proved it on my notebook. Try to determine side-diagonal ratio, it is not golden ratio. This is a pentagon's property(I proved this too).
At this point you will have to wait, as I am working on other videos at the moment. What I can recommend is to find the point used for a hexagon and just double the distance. That will give you the point for a dodecagon.
circumference of 18.22m divided into 30pcs arc, i want to draw one of the arc with 1.45m radius instead of 2.9m radius. pls assist me i have sent message to you on messager facebook too
I was taught this same method over 21 years ago, and all efforts to recall failed until I watched your video. Thank you very much for this very straight to the point video.
Bahut Vdhia Sanu Bahut Help Mili Te Assi Bahut Enjoy Kita So Much Love You Alp Class Very Nice Good Thing ❤
I have been struggling to construct pentagon but now found it easy after watching this video❤
Any one in 2024
Yup
me
Yes
Me in may 2024!
I'm writing tomorrow 😭
This is the first time I've drawn a perfect pentagon. This method is spot on. Thank you ❤
nothing is perfect
no one is perfect
jk, just a joke, well done bro😁
This is not a perfect pentagon. perfect pentagon can not be constructed using compass-ruler
For those wondering why it didn't work, it's because the construction is approximate: if |AB|=1, the radius |A5| = sqrt((4+sqrt(3))/8) ≈ 0.8465, instead of sqrt((5+sqrt(5))/10) ≈ 0.8507. Still, it means 0.5% precision, so it should definitely look OK, taking line thickness into account (as the video demonstrates).
Bro wtf
Wow thats fantastic
So if we draw a big enough pentagon with a small enough nib would the defects show?
@@Someone-qd8up Yes, definitely - that's what the above numbers show.
Thanks for keeping me sane, I was following along in AutoCAD and the error definitely shows up 😅
i do a lot of crafting and hate having to pay so much for so many templates. Your tutorials have saved me so much. Thank you so much for making this Grandmas budget. I have also referred your videos to other senior crafters. The guy who says it doesn't work is full of fecal matter.
Thank you for your kind words. And I am glad I am able to help out. I will keep trying to post more helpful videos.
@@Wimmas pls write out the steps in constructing a pentagon using 3 circle method
Ami Jani Tumi Kichu jabina@@Wimmas
You the best wrote a EGD grade 10 test and you helpt me 🎉
Glad to help. Hope the test went well.
I really understood, thank you so much 😊
You're the best...I thought I could never do TD but you made it easy👏👏
THANK YOU! This been causing me many sleepless nights xxxx
Thank u so muchh u helped me ace my exam god bless u!😊😊
Thank you so much for this video!! None of the others I tried were exact. Yours was PERFECT the FIRST TIME!!!
Glad I could help.
It really helped me in my school project ,thanks please keep it up by making more
Thanks to you i can pass my Basic Technology tests.
I was looking for this method for hours ... finally found it ...thank you for the detailed explanation 👍🤗
You're welcome, although I still recommend method 1 on this channel because of accuracy.
Good
Hey😂
great content.
you have a new subscriber.
i learnt something.
Thank you
Your methods is very good, easy and accurate. Thank you so much
You're welcome.
Thanks. Just the method I was looking for.
Good to know, hope it helped
Ty very much i was having a hard time on my assignment draw a perfect same angle and side pentagon u really helped me❤❤❤i sub and like im really thankful i just need to watch a hexagon one and im good tysm again😊❤❤❤❤
Very useful video thank you sir
I Am Indian I Am Very Happy 😊 For Your Teaching Way
That's great to hear.
Thx a lot
I was struggling a lot in this subject and i am writing an exam in about 1 and a half hours. But i am now positive i am going to ace it all thx to you 😁
You're welcome, and glad it helped.
@@Wimmas it did a lot thx and i got 100% on the exam thx to you 🙏
Thank you sir it helped me alot
Love from Bangladesh 🇧🇩🇧🇩🇧🇩
This video is really helpful...
Thank you very much
You're welcome
Ata ki regular pentagon??
Thank you for teaching me how to draw a pentagon
So you dont need the mid point lines below the A B line?
Anyone in 2024
It was amazing ....I think this is the easiest way to draw a pentagon......👌👌
You have taught way more in one video that my art teacher in her whole career
bro math teacher not a art teacher bec its a PENTAGON
@@_GhostGamerYT_wtf?
I am sorry to hear that, and thanks btw.
Thanks your videos are very useful and your methods are simple
Thank you its great short cut pentagon..
Thanks a lof for shareing your technic
You're welcome
Very helpful thanks the instructions were awesome 💯
Thanks
Thanks I get more from this technical drawing
Thank you so much, You are a lifesaver
Glad to help
This is the best vid ive seen wow it was really helpful
Very helpful, thank you. The top of my pentagon did not meet the top of the circle, but all sides were equal.
thanks for your tutorial sir.
You're welcome
Sir,
I tried thrice but there is a problem in the second last step while intersecting .
Then try method 1 on this channel. Its a bit more accurate if you struggle with the second last step
Very helpful 🙌🙌
It was helpful last year
Thank you this year
You are really doing a good job
Thank you very much, this helps me really well. Keep it uppp😊
Thank you for your kind words.
Is anyone watching this just because of exame 😂
Me here 😂😂😂
Current situation 😂😂😂
Thank you😊 very much I am understanding very well 😇and you doing good videos and all the best 👌
You're welcome, and thank you for your kind words.
This is very helpful thanks for I have passed my waec
Thank you❤
A few years ago I searched for a method for construction of the regular pentagon which contained proof of its own veracity... I could not find one, so I came up with a new method which is impossible to forget. It starts with the Unit Circle, then finding the mid-point of the radius on the X-Axis, then add 1/2 of Root 5 to 1/2 and you get the Golden ratio on the X-Axis. Use your compass centered on the golden ratio point, and draw a circle with radius of golden ratio... Thus there will be 2 golden triangles drawn, one above the X-Axis, and one below it... The 3 points going through the Unit Circle are by definition 3 of the 5 points you need to make a regular pentagon, so just draw in the final two points. I should record a video of it, and post it on TH-cam. The base angles in an isosceles golden triangle are 72 degrees, which is 1/5th of 360 degrees...! 1/2 of root 5 is obtained by making the line-segment between points (1/2, 0) and (0, 1), then just use Pythagorean Theorem to confirm.
Finally done!!! Thank you..
You're welcome
Thank u so much
This is very useful to mee...
Hi amazing work. Thanks a bunch for the vid😊
Thx a lot I was really helpful this for make a dodegahedron
Liked the neat method, but it would have been nice to know the logic behind this method.
Love from sindhudesh☺️💖🌹🥰♥️
Love from South Africa.
Bro what was the length of the first lines wth a and b bro
I'm so good at this thank you 😮😮
Thank you and i know how to do my math homework 😅
Thanks I was very worried about it
Anyone having exam?
SHUT UPP
Yes
Literally me rn
U Made this so simple thanks 👍
What is the distance of line AB
Anyone revising a night before exam
Is it a regular pentagon??
Correct
this is really nice😊😊📝
Thank you
This was really helpful
Glad to help
Thankyou
very nice , thanks a lot
I'm here for the Golden Ratio.
Poly techinc 1 year students😮
Best ❣️
Can u do nonagon and heptagon
Well done.
This looks very convincing, yet it turns out to be an approximation. If the base length AB is 1, then the height of point 5, h5 = (1+sqrt(3))/4;
The angle we want is a= 2pi / 5. But in the drawing you think you should get tan(a/2) =2/(1+sqrt(3)); So a = 2 arctan[2/(1+sqrt(3))]; which gives a= 1.2638
However, 2pi/5 is 1.2566. It's only about 0.57 percent off.
I got a little suspicious because this seemed such an easy construction. Too easy to be accurate 🙂 But pretty nice anyways.
Thank you very much🎉🎉🎉❤❤❤❤
Thank u soo much ❤
Well i guess i need to find a video explain the middle point method then come back when you placed the compass on 6 where is the compass set just random? Depend on the compass distance spot 5 could be out in space, ive
Watched 3 different channels on how to draw a pentagon and every video theres a question i do appreciate you talking the other videos play music donr talk and just start slapping lines down and readjusting the compass and the title says SUPER EASY, probably is once you learn how
I don't know what I did wrong, but my top point sits outside the circle.
thank you for the pentagon ,, can i have one for heptagon
Working on it.
Can this be done in grade 7
Nice videos
Thanks
Aj hi practical h aur ab padh rha 😢😂
Pls can you do a video of a triangle and oval
Good job
Easy I did it at a exam today
Hope it went well
❤❤❤❤❤
Prefection
Thank you
This method does not work I proved it on my notebook. Try to determine side-diagonal ratio, it is not golden ratio. This is a pentagon's property(I proved this too).
Then just dont use it
Thank you!
THANK YOU SO MUCH
Thank you so much
Please do a video how make a dodecahedron
At this point you will have to wait, as I am working on other videos at the moment. What I can recommend is to find the point used for a hexagon and just double the distance. That will give you the point for a dodecagon.
Thank you sir
Thanks sir
You're welcome
How to draw the sketch
circumference of 18.22m divided into 30pcs arc, i want to draw one of the arc with 1.45m radius instead of 2.9m radius. pls assist me i have sent message to you on messager facebook too
I am not quite sure what you are trying to achieve. A 30sided polygon?
Anyone watching because of exams😂
thanks 🎉🎉🎉🎉🎉😊😊😊😊
It has worked
Pls I use the same method u use with my students but I was not getting it
Thanks
You're welcome