1: Right Triangles and the Pythagorean Theorem Last updated Save as PDF Page ID804 Contributed by CK12CK12 1.1: 30-60-90 Right Triangles1.2: Pythagorean Theorem1.3: Converse of the Pythagorean Theorem1.4: Pythagorean Triples1.5: Applications Using the Pythagorean Theorem1.6: The Pythagorean Theorem for Area and Perimeter1.7: Distance Formula and the Pythagorean Theorem1.8: Pythagorean Theorem to Classify Triangles1.9: Special Right Triangles and Ratios1.10: 45-45-90 Right TrianglesLeg times 2–√ equals hypotenuse.