1. Rulers & Protractors (Quadrance & Spread) in QTrig: Setup and Outline | Abstract Algebra 13

    Rulers & Protractors (Quadrance & Spread) in QTrig: Setup and Outline | Abstract Algebra 13

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  2. The most fundamental idea in all of mathematics (WTF is quotienting?) | Abstract Algebra 21

    The most fundamental idea in all of mathematics (WTF is quotienting?) | Abstract Algebra 21

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  3. All triangles with equal base and equal area have equal height | Euclid's Elements Book 1 Prop 39

    All triangles with equal base and equal area have equal height | Euclid's Elements Book 1 Prop 39

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