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Geometry: Parallel Lines and Supplementary Angles

Parallel Lines and Supplementary AnglesGeometryProving Relationships Between LinesProofs Involving Perpendicular LinesLet's Get ParallelProofs About Alternate AnglesParallel Lines and Supplementary…

Geometry: Platonic Solids

Platonic SolidsGeometryThe Next Dimension: Surfaces and SolidsPrismsPyramidsCylinders and ConesPolyhedraSpheresPlatonic Solids Although a sphere has a symmetry that cannot be beat, there are some…

Geometry: Polyhedra

PolyhedraGeometryThe Next Dimension: Surfaces and SolidsPrismsPyramidsCylinders and ConesPolyhedraSpheresPlatonic Solids A polyhedron is a three-dimensional version of a polygon. Recall that a…

Geometry: Prisms

PrismsGeometryThe Next Dimension: Surfaces and SolidsPrismsPyramidsCylinders and ConesPolyhedraSpheresPlatonic Solids Suppose you have a polygon, like maybe a triangle or a rectangle, and you…

Geometry: Proofs About Alternate Angles

Proofs About Alternate AnglesGeometryProving Relationships Between LinesProofs Involving Perpendicular LinesLet's Get ParallelProofs About Alternate AnglesParallel Lines and Supplementary AnglesUsing…

Geometry: Proofs About Quadrilaterals

Proofs About QuadrilateralsGeometryProofs About QuadrilateralsWhen Is a Quadrilateral a Parallelogram?When Is a Parallelogram a Rectangle?When Is a Parallelogram a Rhombus?When Is a Parallelogram a…

Geometry: Proofs Involving Perpendicular Lines

Proofs Involving Perpendicular LinesGeometryProving Relationships Between LinesProofs Involving Perpendicular LinesLet's Get ParallelProofs About Alternate AnglesParallel Lines and Supplementary…

Geometry: Properties of All Quadrilaterals

Properties of All QuadrilateralsGeometryPutting Quadrilaterals in the ForefrontProperties of All QuadrilateralsProperties of TrapezoidsLet's All Fly a Kite!Properties of ParallelogramsThe Most…