- The same area, two ways
- Garfield and similar triangles
- The converse, and right, acute or obtuse
- Exact lengths and triples
- Simplifying and rationalizing
- Boxes, cones and multi-step figures
- Half a square: the ratio
- A leg from the hypotenuse
- Spotting 45-45-90 triangles
- Half an equilateral triangle
- Any side from any other
- Equilateral triangles and hexagons
- Unlocks after
- Opens up