To construct a PENTAGON with ruler (straightedge) and compass

Geometrical construction of a pentagon with Euclidean Tools
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Category:

Science & Technology

Tags:

• Geometry
• Math
• Mathematics
• straightedge
• pentagon

[Filomatia]

I've slowed it down. I hope it's enough.

[MrLuis5581]

hi do u know how to draw a squre inside a circle with a diameter of 1 1/2 in AutoCad?

[Filomatia]

@MrLuis5581 No, I don't.

[156alexa]

thank you!

[jwm239]

@ftop087 ...problem ended up with hexagons.

[jwm239]

...if segment OC is one unit long, then ray AC is (sqrt 5) units long...hmm...that 5 suggests good things.

[charitou66]

Thanks!!!!

[deadmau96]

Nice... but it really becomes messy with all the circles. Any idea?

[sundar390]

hi friends all uploaded videos is super & very useful

[georgetroulis]

@Filomatia Thank you for slowing it down. I also know a pentagon method, only that you start by a line. I think your method is better. It really helped me experiment on some things. Thank you for your helpful videos and keep up the good work!:)

[bigdolot]

This is brilliant - I have checked it algebraically and with trig and it works exactly.

Who came up with this?

bigdolot

[HuiEnXD]

wow. thank youuuu!!!

[rogertobey]

goog video, thanks