College Geometry Online, eLearning

Online Geometry: Decagon, Theorems and Problems

Regulaar Decagon

Euclid's Elements Book XIII, Proposition 10

Euclid's Elements, Book XIII, Proposition 10 Pentagon, Hexagon, and Decagon. One page visual illustration.

Regular Decagon Art. iPad Apps: Spangled

iPad Apps: Spangled!.
Regular Decagon Art.

Polygon Classification

Polygon Classification. Interactive Mind Map.
Decagon.

Geometry Help Topics for 4-8 grades by MathLeague
Figures and Polygons, Decagon. 

Polygons Index

Polygons.

Viviani theorem extension, regular polygon

Geometry Problem 225. Viviani's Theorem Extension, Regular Polygon, Apothem, Distance.

Euclid's Elements 23 definitions

Euclid's Elements Book I, 23 Definitions. One-page visual illustration.
Euclid's Elements Book. Index

 

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