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Triangle Centers - Table of
Content 4
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Proposed Problem 79: Triangle.
Similarity, Altitudes, Orthocenter, Incircles, Inradii. |
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Interactive
Orthopole of a Triangle: Using
TracenPoche Dynamic Geometry Software,
Online Step-by-Step construction, manipulation, and animation. |
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Morley's Triangle & Center: with interactive animation and
manipulation.
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Schiffler Point: Four Euler Lines with interactive animation and
manipulation.
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Proposed Problem 68: Triangle, Incircle, Inradius, Tangent, Similarity.
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Proposed Problem 67: Triangle, Circumcircle, Angles, Cyclic
Quadrilateral.
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Proposed Problem 66: Triangle, Excircle, Tangents, Geometric Mean.
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Proposed Problem 64: Triangle, Incircle, Transversal. |
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Incenter, Excenter, Incircle, Excircle Using TracenPoche Dynamic
Software
Step-by-Step construction, Manipulation, and animation. |
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Three Tangent Circles Theorem Using TracenPoche Dynamic Software
Step-by-Step construction, Manipulation, and animation. |
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Sangaku Geometry Theorem: Cyclic Quadrilateral.
Inradii, Rectangle. |
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Sangaku Problem (An Old Japanese Theorem).
Inradii, Carnot's theorem. |
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Triangle Centers. Word find
puzzle. |
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Proposed Problem 52: Triangle, angles, incircle.
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Feuerbach Theorem
One of the most striking theorems in triangle geometry. |
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Feuerbach Points and Nine-Point Circle with interactive
animation, manipulation, and step-by-step construction. |
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Feuerbach
Point Facts
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Feuerbach
Theorem, Acute Triangle illustration
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Feuerbach
Theorem, Obtuse Triangle illustration
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Feuerbach
Theorem, Right Triangle illustration
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Proposed Problem
51: Fagnano's Problem
Inscribed Triangle with the Minimum Perimeter.
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Proposed Problem 40.
Triangle, Incenter, Excenter, Angles 80, 40, Distances. |
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Proposed
Problem 40. Geometry Help.
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Proposed Problem 39.
Triangle, Incircle, Bisector, Cyclic Quadrilateral and angles. |
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Proposed Problem 39 Geometry Help.
Facts you should know for the proposed problem 39. |
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Proposed
Problem 38.
Right Triangle, altitude, incircles, incenters, and angles. |
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Proposed
Problem 37.
Right Triangle, altitude, incircles, incenters, and orthocenter. |
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Proposed
Problem 36.
Right Triangle, altitude, incircles and inradii. |
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Lemoine Theorem |
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Triangle and Squares
17
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Triangle and Squares
16
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Sawayama -Thebault's
theorem |
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Proposed Problem
34.
Right triangle, cevian, incircles, tangents and inradius. |
