All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Shapes > Geometry
Squaring shapes: (Posted on 2004-09-22) Difficulty: 3 of 5
The ancient Greeks, being masters of geometric manipulation, often tried their hand at "squaring" various shapes. This involved using only the most fundamental rules of geometry to construct a square whose area equals the area of the original shape.

Can you follow in their footsteps and square a simple triangle?

The solution must hold for all types of triangles.

See The Solution Submitted by Benjamin J. Ladd    
Rating: 2.4000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Solution | Comment 6 of 9 |
(In reply to Solution by Old Original Oskar!)

  P      A          Q
  
                      
          C

I get it! The crux is that Angle PCQ is 90 degrees. With PA=b, AQ=h/2 = c (say), and AC=x, we have PC=sqrt(b^2+x^2), CQ=sqrt(c^2+x^2) so that PQ=b+c=sqrt(b^2+c^2+2*x^2).  Squaring both sides of the last equation and cancelling, x^2=bc=bh/2 as desired.

Nice uncluttered solution!


  Posted by Richard on 2004-09-22 15:09:30
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (7)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information