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Tetraéder öröknyitogató

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Liu Hui was a 3rd century Chinese mathematician. I first stumbled upon him when I saw puzzles based on dissection proofs of the Pythagorean Theorem (Shang Gao Theorem (商高定理)) at ICME11 in 2004. Rec…

Liu Hui was a century Chinese mathematician. I first stumbled upon him when I saw puzzles based on dissection proofs of the Pythagorean Theorem (Shang Gao Theorem (商高定理)) at in Rec…

Liu Hui was a 3rd century Chinese mathematician. I first stumbled upon him when I saw puzzles based on dissection proofs of the Pythagorean Theorem (Shang Gao Theorem (商高定理)) at ICME11 in 2004. Rec…

Liu Hui was a century Chinese mathematician. I first stumbled upon him when I saw puzzles based on dissection proofs of the Pythagorean Theorem (Shang Gao Theorem (商高定理)) at in Rec…

Remember when

Remember when

Building Platonic Solids: How to Construct Sturdy Platonic Solids from Paper or Cardboard and Draw Platonic Solid Templates With a Ruler and Compass

Building Platonic Solids: How to Construct Sturdy Platonic Solids from Paper or Cardboard and Draw Platonic Solid Templates With a Ruler and Compass

The points of an Icosahedron (one of the 5 Platonic Solids) an be made by intersecting 3 Golden rectangles (based on the proportion Phi - 1:1.618 - the Golden Ratio). An icosahedron has 20 triangular faces, 30 edges and 12 vertices with five triangular faces meeting at each vertex.

The points of an Icosahedron (one of the 5 Platonic Solids) an be made by intersecting 3 Golden rectangles (based on the proportion Phi - - the Golden Ratio). An icosahedron has 20 triangular faces, 30 edges and 12 vertices.