Curated OER
Napolean Triangle
Students investigate the Napoleon triangle theory. In this polygon lesson, students differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...
Curated OER
The Industrial Revolution
Contrasting between the "Haves" and the "Have-Nots" of 18th-19th century Europe, this presentation explores the social and technological implications of the Industrial Revolution. Inventions, social trends, and scientific breakthroughs...
Cut the Knot
Cut the Knot!: Napoleon's Theorem
Site that describes in detail Napoleon's theorem. To understand this site be sure you understand what the centroid of an object is. The site describes polygons in terms of the roots of unity of a function. The page gives an interactive...
University of Georgia
University of Georgia: Extended Concurrencies of a Triangle
This site is an extended lesson on point concurrency in triangles. The page goes through an exploration with the Napoleon Point and the Fermat Point. The site requires the use of GSP.
Cut the Knot
Cut the Knot!: Napoleon's Theorem
This site gives an explanation of Napolean's Theorem and gives several links to Napoleon's Theorem.