Given a triangle ABC (see the figure above)
with the squares ABDE, BCFG, ACHJ, and HJKL. If M is the center of
square HJKL, prove that lines DH, GJ, and BM are concurrent at O.
Dynamic Geometry Environment (DGE) or Interactive Geometry Software
(IGS) of Problem 902
The interactive demonstration
above was created with GeoGebra.
To stop/play the animation: tap the icon in the
lower left corner.
To reset the interactive figure to its initial state: tap the icon in the
upper right corner.
To manipulate the interactive figure: tap and drag points or lines.
GeoGebra
GeoGebra is free and multiplatform dynamic mathematics software for all levels of education that joins geometry, algebra, tables, graphing, statistics and calculus
application, intended for teachers and students. Many parts of GeoGebra have
been ported to HTML5. It has received several educational software awards in Europe and the USA.
See the static diagram of problem 902
Home

Search  Geometry

Problems 
All Problems 
Open Problems

Visual Index

10 Problems

Problems Art Gallery

Art 
901910

Dynamic
Geometry

GeoGebra 
Triangles

Square

Triangle &
Squares

Concurrent lines

iPad Apps

Nexus 7 Apps
 Projects

Email

Solution/Comment  by Antonio Gutierrez
