#### G-SRT.B. Prove theorems involving similarity

#### G-SRT.B.4. Prove theorems about triangles. Theorems include: a line parallel to one side of a triangle divides the other two proportionally, and conversely; the Pythagorean Theorem proved using triangle similarity.

- Bank Shot
- Congruence of parallelograms
- Extensions, Bisections and Dissections in a Rectangle
- Finding triangle coordinates
- Folding a square into thirds
- How far is the horizon?
- Is this a rectangle?
- Points from Directions
- Slope Criterion for Perpendicular Lines
- Tangent Line to Two Circles
- Unit Squares and Triangles