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Geometry: Using and Proving Angle Supplements

Using and Proving Angle SupplementsGeometryProving Segment and Angle RelationshipsExploring MidpointsHow Many Midpoints Are There?Proving Angles Are CongruentUsing and Proving Angle ComplementsUsing…

Geometry: When Is a Parallelogram a Rhombus?

When Is a Parallelogram a Rhombus?GeometryProofs About QuadrilateralsWhen Is a Quadrilateral a Parallelogram?When Is a Parallelogram a Rectangle?When Is a Parallelogram a Rhombus?When Is a…

Chemistry: What Are Acids and Bases?

What Are Acids and Bases?ChemistryAcids and BasesWhat Are Acids and Bases?Properties of Acids and BasesThe pH ScaleTitrationsBuffers Although I've told you that acids and bases aren't hard to…

Geometry: Exploring Midpoints

Exploring MidpointsGeometryProving Segment and Angle RelationshipsExploring MidpointsHow Many Midpoints Are There?Proving Angles Are CongruentUsing and Proving Angle ComplementsUsing and Proving…

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…

First Aid for Crossword Puzzlers

We cannot begin to list all the odd words you might encounter in your daily and Sunday crossword puzzles, for such words run into the thousands. But we have tried to include those that turn…

Geometry: Proofs Involving Perpendicular Lines

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