Chapter 16 — Non-Euclidean Geometries
This chapter is split into one page per lesson, based on the teaching plan’s terms and concepts.
Lesson one-pagers
| Lesson | Topic | One-pager |
|---|---|---|
| 1 | Geometry on a Sphere | Open |
| 2 | The Saccheri Quadrilateral | Open |
| 3 | The Geometries of Lobachevsky and Riemann | Open |
| 4 | The Triangle Angle Sum Theorem Revisited | Open |
What each one-pager contains
- Words to know
- Concepts to know
- Formulas / rules
- Homework helper
- Watch out
- Check
Chapter 16 in one sentence
Non-Euclidean geometry begins with great circles on a sphere and Saccheri quadrilaterals, leading to the Lobachevskian and Riemannian models and different triangle angle sums.