Cut Triangles into Rectangles & Dudeney's Puzzle Generalized

[b](Updated 2 Jan 2013)[/b] A quadrilateral can be dissected into a rectangle by a line joining the mid-points of one pair of opposite sides, and the perpendiculars to this line from the mid-points of the other pair of opposite sides (see http://www.geogebratube.org/student/m3459 ). Explore how a triangle could also be dissected similarly into a rectangle, and investigate how the rectangle could become a square (the generalized Dudeney's Puzzle).

 

Anthony OR 柯志明

 
Resource Type
Activity
Tags
dissect  dissection  dudeney  exploration  plane-figures  puzzle  puzzles  rectangle  square  triangle  triangles Show More…
Target Group (Age)
11 – 14
Language
English (United Kingdom)
 
 
 
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