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Perpendicular Lines, Theorems
and Problems - Table of Content (15)
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Proposition 12
Semicircle, Perpendicular to diameter, Chords, Tangents. |
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Proposition 13
Circle, Diameter, Perpendicular to chords, Congruence. |
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Proposition 14
Salinon: Semicircles, Perpendicular to diameter, Circles,
Areas. |
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Proposition 15
Circle, Perpendicular to diameter, Inscribed Regular Pentagon, Arc,
Midpoint, Radius. |
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Euclid's
Elements, Book X, Lemma for Proposition 33
One page visual illustration.
Perpendicular to a side, Parallel lines. |
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Proposed Problem 290.
Internally Tangent circles, Radius, Perpendicular lines, Tangent. |
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Geometry Expressions.
Perpendicular lines |
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Proposed Problem 289: Tangent circles, Radius, Perpendicular, Tangent. |
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Engineering the Impossible: Chartres Cathedral
Circle, Square, Triangle,
Perpendicular lines. |
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Proposed Problem 280.
Quadrilateral, Perpendicular lines, , Parallel lines, Area of Squares. |
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Piet Mondrian, New York City 1941-42 and the Golden Rectangle.
Index.
Perpendicular lines. |
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Piet Mondrian, Lozenge Composition with Red, Black, Blue, and Yellow
1925,
Pioneer of Geometric abstraction.
Perpendicular lines. |
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