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Euler characteristic

math Maturity 7-9

Math can help us see shapes.

Vertex edge face.svg
Vertex edge face.svg
We can count corners and sides. We can also count the flat parts. These numbers tell us about a shape. It stays the same even if we bend it. Do you like shapes?
tetrahedron.png
tetrahedron.png

43 words
🖼️ Images & Media (24)
File:Vertex edge face.svg
Vertex edge face.svg
File:tetrahedron.png
tetrahedron.png
File:hexahedron.png
hexahedron.png
File:octahedron.png
octahedron.png
File:dodecahedron.png
dodecahedron.png
File:icosahedron.png
icosahedron.png
File:Tetrahemihexahedron.png
Tetrahemihexahedron.png
File:Octahemioctahedron.png
Octahemioctahedron.png
File:Cubohemioctahedron.png
Cubohemioctahedron.png
File:Small stellated dodecahedron.png
Small stellated dodecahedron.png
File:Great stellated dodecahedron.png
Great stellated dodecahedron.png
File:V-E+F=2 Proof Illustration.svg
V-E+F=2 Proof Illustration.svg

+ 12 more

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Polyhedron
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More advanced topics to explore

Regular dodecahedron Solid geometry Möbius strip Algebraic geometry

🪜 Step back

Simpler topics to build understanding

Polyhedron Topology Topological space Regular polyhedron
📚 Content adapted from Wikipedia | Readability: FK 14.6 | Vital Level 4