Geometry without Tears 6: THE PENTAGON 2

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  • Опубліковано 22 жов 2024

КОМЕНТАРІ • 29

  • @michaeldean5787
    @michaeldean5787 3 роки тому

    That comment about the leaf really got me. So obvious but I've not really thought about that before. A fold produces a perfectly straight edge - of course!

  • @michaeldean5787
    @michaeldean5787 3 роки тому

    Very, very interesting. Now how do I become accurate in drawing it? The sides of my Pentagon are about 2mm off. I felt as if I was placing my compass very accurately but perhaps I'm missing something?

  • @dakellymon
    @dakellymon 10 років тому +2

    Awesome

  • @JoaoKorreiaa
    @JoaoKorreiaa 10 років тому

    thanks a lot for this video
    doing descriptive geometry and we had to remember some old stuff like this, helped my easily forgetful mind

    • @davidnicholls100
      @davidnicholls100  10 років тому

      Dave Goldenstein Glad it helped, Dave. Thanks for commenting.

  • @freddupont3597
    @freddupont3597 3 роки тому

    Hello David; did you ever produce the video on the properties of the pentagram that you mention towards the end?
    BTW, this method (2) does not produce a perfectly regular pentagon; the base is larger than the other 4 sides.

    • @davidnicholls100
      @davidnicholls100  3 роки тому +1

      No, I didn't, but I did make a series on the Golden Mean, which is closely related.
      ua-cam.com/video/VoX-M-ry_pY/v-deo.html

    • @freddupont3597
      @freddupont3597 3 роки тому

      @@davidnicholls100 Thank you, I'll take a look.

  • @ZenHoki
    @ZenHoki 10 років тому +1

    Please tell me where did you get that wonderful compass that holds a regular pencil?

    • @davidnicholls100
      @davidnicholls100  10 років тому +11

      I stole it from school when I left there in 1964.

  • @starforged
    @starforged 8 років тому

    How do you figure it out if you want the sides 3/4". Laying out a hole pattern of a car wheel that has 2.5" between lug nut. Pentagons are easy but making one of a particular size is not so easy.

    • @davidnicholls100
      @davidnicholls100  8 років тому +1

      very simple actually, Steve! :-)
      Watch the other pentagon video!
      ua-cam.com/video/FiUacEba8EE/v-deo.html

  • @kidsworld4902
    @kidsworld4902 3 роки тому

    Wow that is good draw ing

  • @tunisian.feminity
    @tunisian.feminity 9 років тому

    Thank you :*

    • @davidnicholls100
      @davidnicholls100  9 років тому

      +★ Glory of Tunisian Art ★
      You're very welcome!

  • @perryleaves2127
    @perryleaves2127 8 років тому

    It would be nice to have the proof!

  • @danielemmanuel3863
    @danielemmanuel3863 10 років тому

    cool!

  • @Obscurika
    @Obscurika 4 роки тому +1

    You just saved me $20k in student loans.

    • @davidnicholls100
      @davidnicholls100  4 роки тому +2

      Why what did I do??!!!
      (A cheque for 10% would be acceptable ;-)

  • @DizzyHips
    @DizzyHips 9 років тому +1

    Awesome