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Geometry:
Orthocenter of a triangle, Theorems and Problems -
Index 9
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Proposed Problem 427.
Triangle, Two Altitudes, Square of a Side, Orthocenter. |
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Proposed Problem 413.
Cyclic Quadrilateral, Orthocenter, Parallelogram, Concurrency,
Congruence. |
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Proposed Problem 408.
Cyclic quadrilateral, Perpendicular, Parallelogram, Congruence,
Orthocenter. |
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Proposed Problem 393.
Triangle, Orthocenter, Circumcircles, Congruence, Collinear. |
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Geometry Art 61 - 70.
Triangle, Quadrilateral, Circle, Cyclic, Similarity. |
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Triangle Centers |
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Antonio Gutierrez
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