Geometry section of

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* calculator link
Mean Proportionals in Right Triangles (Altitude Rule, Leg Rule)
Pythagorean Theorem (theorem, triples, converse, proof, Pythagorean Spiral)

Practice with Special Right Triangles (30º-60º-90º and 45º-45º-90º)

REFRESHERS: (while these topics are mostly "review", you may also find new information here)
Radical Review (Note: links to Algebra 1 section of the MathBitsNotebook.)