# What is this shape called?

Discussion in 'Design and Graphics' started by FourCandles, Nov 4, 2010.

1. ### FourCandles macrumors 6502a

Joined:
Feb 10, 2009
Location:
England
#1
I need look into the usage of a particular shape/design, and I really need to know what its called - if it has a name - before I can even search for it.

Heres a quick sketch:

So, its formed from a circle, and overlaid with a square with the length of the sides equal to the radius of the circle, so that the corner of the square is at the centre of the circle.

However, Its not in any of the lists of geometric shapes that Ive seen, maybe because its not a geometric shape with an equation to produce it.

Does anyone know if theres a name for this shape? Many thanks.

2. ### lucidmedia macrumors 6502a

Joined:
Oct 13, 2008
Location:
Wellington, New Zealand
#2
I am not sure what its proper name is, but it has quite a history!

I am thinking of the whole "new quark" logo that had to be changed because of copyright infringement issues:

http://inko9nito.wordpress.com/2007/10/16/quark-vs-scottish-arts-council/

3. ### FourCandles thread starter macrumors 6502a

Joined:
Feb 10, 2009
Location:
England
#3
That's a great link, I see there's lots of other usage of the shape and its derivatives in the article too. Many thanks.

4. ### eellingb macrumors newbie

Joined:
Jul 20, 2009
#4
The closest I could figure is a teardrop, though the point isn't up on your example.

Joined:
Jun 8, 2009
6. ### autacraft Guest

#6
no idea what its called, but have lots of derivatives (including this actual shape itself) in illustrator if anyone wants.

PM me

7. ### FourCandles thread starter macrumors 6502a

Joined:
Feb 10, 2009
Location:
England
#7
I think technically the teardrop is a different mathematical shape - see here for the equation - and I dont think you can have a value of m in that equation that will give the perfectly straight sides (as you can gather Ive re-learnt a lot of geometry just recently!). But thanks for the replies.

Thanks - I've created it OK, but that's then triggered the questions about prior usage that prompted my thread.

8. ### autacraft Guest

#8
There is an equation you can use to create this shape, but I'll leave the working out to you ;-)

Heres a diagram that will help!

File size:
8.4 KB
Views:
3,105

#9
here you go:

File size:
43 KB
Views:
214

Joined:
Oct 12, 2005
11. ### SidBala macrumors 6502a

Joined:
Jun 27, 2010
#11

You can make this curve from multiple piecewise curves. Basically a 3/4th circle and 2 lines.

Yeah you figure out those equations

12. ### SChristy macrumors newbie

Joined:
Nov 4, 2010
#12
I've searched wikipedia but I couldn't find anything looking like this...Actually I think that there is not an official name for this shape.The only information I was able to find is just the mathematical way you can shape it.I hope I helped you a bit

13. ### chrono1081 macrumors 604

Joined:
Jan 26, 2008
Location:
Isla Nublar
#13
Pfft! Maple will figure it out for me! (I don't know enough math to use Mathematica )

14. ### SidBala macrumors 6502a

Joined:
Jun 27, 2010
#14
Why even that? A simple pen and paper + 2000 year old math is enough to do this.