Geometry Reference Page...

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Blog entry by RobH posted 04-01-2008 03:13 PM 6548 reads 10 times favorited 9 comments Add to Favorites Watch

Hey all,

I was looking for a geometric construction to divide a line into N equal segments. Not that I cannot measure it, but I find that it always comes out a little more accurate when I use a geometric construction technique to get the answer.

Math Open Reference

Since we as woodworkers deal with a lot of geometric problems, I thought I would post this as it might be really useful to a lot of us. The table of contents for geometric construction is this link.

Math Open Reference:Geometric Constructions TOC

One good thing about this is that it shows an animated version of the construction so you can see it being done. Should work wonders in the shop.

Hope this helps other as much as it has helped me just today.

Rob Hix

-- -- Rob Hix, King George, VA

9 comments so far

View SteveKorz's profile


2134 posts in 3742 days

#1 posted 04-01-2008 03:20 PM

OK Rob, This is awesome… and very helpfull… THANKS!!!

-- As iron sharpens iron, so one man sharpens another. (Proverbs 27:17) †

View Damian Penney's profile

Damian Penney

1141 posts in 4019 days

#2 posted 04-01-2008 04:25 PM

Cool, that really is useful, thanks Rob

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View Scott Bryan's profile

Scott Bryan

27250 posts in 3850 days

#3 posted 04-01-2008 05:04 PM

Hi Rob,

Thanks for the post. I will have to bookmark this page.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View rikkor's profile


11295 posts in 3902 days

#4 posted 04-01-2008 07:25 PM

Oooh, I have a headache already. I am going to check the site out, however.

View GaryK's profile


10262 posts in 4016 days

#5 posted 04-01-2008 09:24 PM

Great links! AutoCAD does most of the thinking for me.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

View RobH's profile


465 posts in 4077 days

#6 posted 04-01-2008 09:35 PM

I let Sketchup do most of my thinking also. But there are times when things do not turn out exactly like the drawing tells me they should. That is when I find things like this handy.

One thing I have always done is to be sure I do not size something (i.e. a drawer front) until the piece it is fitting in to (the face frame) is completed. Sometimes this produces a situation that I need to respond to without a CAD drawing. It’s not that I cannot do the math that I need to do, it is just that I find, at least for myself, in the shop, the geometric constructions are a lot easier, and end up being far more accurate than the measuring.

Glad everyone so far has found this useful.

-- -- Rob Hix, King George, VA

View Grumpy's profile


23997 posts in 3879 days

#7 posted 04-02-2008 12:54 AM

Could come in handy Rob. Thanks.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View Bob Babcock's profile

Bob Babcock

1809 posts in 4114 days

#8 posted 04-02-2008 04:40 AM

Nice link….

-- Bob

View bambooMan's profile


6 posts in 2914 days

#9 posted 08-25-2011 03:23 PM

Thanks! This is very helpful

-- Why Bamboo? Because its free lumber. And in the SouthEast anyway, it grows everywhere.

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