Talk:Deltoid curve
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Proposed move edit
I propose moving this to Deltoid curve, and redirecting Tricuspid curve there. Gene Ward Smith 23:11, 14 May 2006 (UTC)
Animation edit
I removed this graphic when I added the animated deltoid figure. Just in case someone wants to put it back.Doctormatt 03:23, 24 August 2006 (UTC)
Inanimate object edit
The "animation" of the deltoid curve "shown in red" does not move for me, there is just a red ¿starting? dot. Is it me or The System?
in other words, essentially the same words edit
... it is the roulette created by a point on the circumference of a circle as it rolls without slipping along the inside of a circle with three times its radius. It can also be defined as a similar roulette where the radius of the outer circle is three times that of the rolling circle.
These "two" definitions look practically identical to me. —Tamfang (talk) 22:59, 14 October 2011 (UTC)
- I'll have to look at the wording in context but there are two different sizes of circles which, when rolled inside the same circle, generate the same curve. With one exception, all centered trochoidal curves (Limaçon, nephroid, deltoid, etc.) have this double generation property.--RDBury (talk) 18:18, 16 October 2011 (UTC)
Inconsistent Title Naming? edit
The AstoidAstroid article doesn't have curve within the title but this one does. I think we ought to remove the curve and just call the article Deltoid --Pithon314 (talk) 00:48, 20 December 2019 (UTC); edited 08:01, 14 December 2020 (UTC)
Ambiguous parametric equations edit
The parametric equations are given as
which are the same ones for a hypocycloid. However, these apply for any hypocycloid. For a deltoid, the following must apply.
As written, I believe this is not emphasized enough. Rchensix (talk) 21:20, 28 December 2020 (UTC)