ProofWiki:Books/Euclid/The Elements/Book II
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Euclid: The Elements: Book II
Published c. 300 B.C.E.
Contents
- Book II: Geometrical Algebra
- Definitions
- Proposition 1: Real Multiplication Distributes over Addition
- Proposition 2: Square is Sum of Two Rectangles
- Proposition 3: Rectangle is Sum of Square and Rectangle
- Proposition 4: Square of Sum
- Proposition 5: Difference of Two Squares
- Proposition 6: Square of Sum less Square
- Proposition 7: Square of Difference
- Proposition 8: Square of Sum with Double
- Propositions 9 and 10: Sum of Squares of Sum and Difference
- Proposition 11: Construction of Square Equal to Rectangle
- Proposition 12: Relative Sizes of Sides of Obtuse Triangle
- Proposition 13: Relative Sizes of Sides of Acute Triangle
- Proposition 14: Construction of Square Equal to Given Polygon
