Gregs Swing

We met Greg Frederickson in August 2002.
Greg Frederickson

Greg is the author of a wonderful book “Dissections: Plane & Fancy”. We got the idea of dissecting pentominoes from this book.
Greg Frederickson

He showed us his second book, Hinged Dissections: Swinging & Twisting which is about ‘hinged dissections’ Greg Frederickson

Greg gave us a beautiful present, which we want to show to you all.
The pentominoes-swing consists of 20 congruent right isosceles triangles, they are glued together with adhesive tape
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Triangle 1 is glued to triangle 20, so forming a sling of triangles. You can try making it from paper, but ours is made of beautiful cherry wood.

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With a bit of practice you can use the swing to make any pentomino!
 

F-pento

I-pento

L-pento

N-pento

P-pento

T-pento

U-pento

V-pento

W-pento

X-pento

Y-pento

Z-pento