- K-8 GeometryClassifying QuadrilateralsTriangle TypesSquare Not SquareRandom TriangleFlip FlopTriangle with SquaresTrianglesTriangle TruthsClassifying QuadrilateralsClown!Pythagorean TilingTransformations - Multi-StepTwo ReflectionsThe Parallelogram FactoryIsosceles triangle factoryTriangle By SidesPythagorean by RefectionPythagorean DataElements, Book I, Proposition 47pythagorean theorem (proof)Pythagorean RearrangementQuadrilateral by DiagonalDiagonal LengthsIsosceles Triangles - Examples and Non-ExamplesDaVinci's Pythagorean Theoremmosaic puzzleTriangle DilationsTilesKaercher-Rubik's Flexagon Templatemax bill Pythagorean SquaresReflect on geometric areasQuarter the Cross: 4 Dot ChallengeArea of a Triangle (V3)Pyramids in PrismThree Pyramids to Form a Cube