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How to divide a circle into five equal parts

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Learn how to split a circle into 5 equal sectors and how to construct a regular pentagon inscribed in.
This RU-vid channel is dedicated to teaching people how to improve their technical drawing skills. It focusses on drawing figures from the geometric plane to descriptive geometry and also different systems of technical drawing representation.
If you subscribe, click, like or leave a comment you will be helping us to grow our channel and help more people with their technical drawing skills.
Thank you in advance.
Dubbed by Frank Shaw.
Music by Antonio Fernández Ruiz. antoniofernande...
#Geometry #HowtoDraw
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Опубликовано:

26 фев 2020

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Комментарии : 39

@NeoMK Год назад

Bro, I failed Algebra like 3 times in high school. Never made it to geometry or calculus. So to all those teachers that said we would not always have a calculator in our pockets, we have one, and it also can teach you this! Learned it in 5 minutes! Thank you!

@agh19 4 года назад

Thanks! I needed this exact information for a small shop project and this was perfect. Short, to the point, and very clearly presented.

@joannas322 9 месяцев назад

I'm writing a book and I needed this for an event in the book. Thanks it was very interesting

@ACME22 Год назад

Thank you very much. I used to do this all the time in the year 1980 BC (Before CAD), 40 years with CAD drove it out. Can’t wait to go through your other videos, it’s great nostalgia for me.

@victoriasuppan3180 4 года назад

Perfect! Just what i needed to start my new composition! Thank you :)

@user-pr4ec2fq7n 2 года назад

That was what I needed for my moral class!! Thank you!!

@tonywilliams7104 4 года назад

brilliant....great help for geometry of the pyramids.... everything can be done with sticks and string....great for marking out the garden...thanks. maith thú.

@danielajohnson177 2 года назад

This is great!!! Thank you so much, I will use this in my ceramics designs. :)

@maqboolahmad9301 2 года назад

Can you explain the math behind this principle, how & why.

@chrismartin9849 Год назад

I’ve been trying to figure that out, too.

@joannas322 9 месяцев назад

Oh my goodness Chris I love your music @@chrismartin9849

@clnarmy 3 года назад

Thank you so much this helped me A LOT💕🔥

@gardblades 4 года назад

Life saver!

@alefiyataher Год назад

Thank you

@khushirana7249 2 года назад

Thank you sir 🙏

@samellis1055 Год назад

I like to ask my students sometimes to figure out how to divide a pizza into 5 equal slices, without a protractor to find the 72 degrees necessary. Using just a compass we could probably just about manage it with tolerable accuracy. But in a kitchen, no compass. Perhaps some tongs could be used instead?

@roshantandel3828 2 года назад

Great!👍

@huw3851 3 года назад

I'm guessing this is the kind of thing that was worked out by a process of trial and error.

@dish7877 2 года назад

its funny thinking about how mathematicians do arbritray stuff and end up doing stuff like this

@ryanbennett4495 2 года назад

One could also use a protractor to mark the exact points and then work backwards from there

@sport_1-st. 2 года назад

Super video thank you sir 🙏

@user-lz8fe5uc2d Год назад

Thanks sir

@zaneseligman1313 2 года назад

OR…. OR…. I can GUESS , and get super close!!..!!

@HXGN-zn1gi 2 месяца назад

Is anyone here because he neede to split a pizza to 5 people 😀🥴

@youssufmostafa6588 3 года назад

I just wanted to cut a cake

@rickschuman2926 2 года назад

But first, you need too much digital gear. How do you get this onto a piece of wood for a practical application, instance?

@j.b1353 Год назад

Dude, watching him doing it ... I replicate it with a pencil and a string. It was incredible helpful

@chrismartin9849 Год назад

With a compass…..

@johnvelasquez4180 3 года назад

CAN I HAVE A SHOUTOUT

@kehaneefahaneefa3704 4 года назад

Good

@soggeynoodlebear4339 Год назад

I just needed to cut up a big doughnut

@MrRandominternetname 2 года назад

How do I do this with my pizza?

@theegg6357 3 года назад

Temuulen mu sda mn

@bricology 2 года назад

I was with you until 01:15, but after that, your use of jargon completely lost me. "Calculate the perpendicular bisector of the radius...and the radius slightly longer than half the radius..."?! It's too bad you couldn't use layman's terms for those of us who aren't geometricians.

@Steven-T 2 года назад

I can definitely put it in layman's terms, but how he said it is more concise. Draw two circles about three quarters the size, one centered on the midpoint and another on the horizontal diameter. The points where those two circles intersect is the *exact* midpoint of the bigger circle's horizontal radius.