Monday, January 21, 2013

Cross to Isosceles Triangle Dissection

Move the Size slider to change the size of the cross and move the slider alpha to the extreme right to transform the figure. 
This is a Java Applet created using GeoGebra from - it looks like you don't have Java installed, please go to

The applet above is an example of a dissection puzzle. A dissection puzzle, also called a transformation puzzle tiling puzzle where a set of pieces can be assembled in different ways to produce two or more distinct geometric shapes (Wikipedia). 

The cross to isosceles triangle dissection puzzle above was created by Henry Dudeney in 1897.


"Dudeney's Cross-to-Isosceles-Right-Triangle Dissection" from the Wolfram Demonstrations Project


  1. this topic is interesting. This information is very useful to me. I hope there will be many post or like this blog. Thank you for sharing.
    Indian TV Serials Kumkum Bhagya
    Colors TV Reality Show Bigg Boss 10