Hi Please let me know where I can find the condition that will imply that a given polygon circumscribes a conic. I am specially interested in hexagons...
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RE: Barycentric Coordinate Problem: I’m not sure whether this is an easy one or a hard one, but I’m stuck on it. To my surprize, I have not yet found...
Hi Jeremy ... You can calculate the angle BOC if you can find length BC. If A' is the mid-point of BC then let lengths a = OA' = OA/2 b = OB c = OC d = BA' =...
Hi Jeremy ... I don't follow your reply. In my post I gave a calculation for finding the length of BC from the lengths OA, OB and OC. Doesn't that solve your...
... Out of interest I substituted back in the original terms for a, b, c, d, used the Cosine rule for triangle OBC, and got Cos BOC = ( OA^2 - OB^2 - OC^2 ) /...
... I REPLY: There is something wrong with your “cos BOC = etc” formula, since, as length OA increases or decreases, your value for Cos BOC would change,...
What exactly are barycentic coordinates? Do you have the word spelled correctly, as I can't find a definition anywhere? If the topic is "Physics" vectors, I...
Please disregard my post---after doing a web search, I just learned I know nothing about barycentic coordinates. Carl Adkins ... From: Carl Adkins To:...
Hi Jeremy ... O is the centroid so the line AO cuts BC at its midpoint, call it A', also the length A'O is half OA so B, C and O determine just one OA. You...
Hi Jeremy ... I've looked at your first post again and I think I see the misunderstanding. I was talking about a triangle "weighted" by its area, whereas I...
Hi Jeremy ... At risk of solving another different problem to yours. I am pretty sure that the lengths OA, OB, and OC are given so - let a = length OA * weight...
... I've just seen Darij's post on Hyacinthos - http://groups.yahoo.com/group/Hyacinthos/message/10542 The equation for CosF above is the Cosine Rule for a...
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Can anyone recommend a geometry textbook that is more than a workbook - i.e. can be used to explain and be a reference book also? The course is grade 9 honors...
Hi trilsys, It all depends on what you want, If you want a 'no fills' fundamental text book you will need to look in a secondhand book store for one of the...
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Please,Please,Please, Mr Moderator stop all of the finance and mortgage spam filliing up the files. Should any member of this group want this information there...
I often have to fit a rectangular shape into a round hole. (I know, I know, square peg in a round hole...) For example, finding how large a hole has to be...
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