Published Shared Results – Các Kết Quả Đã Chia Sẻ Công Bố

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1. Bài báo trên Paul Yiu Forum Geometricorum

Papers in Paul Yiu Forum Geometricorum

Pedals on Circumradii and the Jerabek Center

The Arbelos and Nine Point Circles

Two Triads of Congruent Circles from Reflections

Two more Powerian pairs in the arbelos

On a triad of similar triangles associated with the perpendicular bisectors of the sides of a triangle

Golden sections in a regular hexagon

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2. Tâm tam giác trên Clark Kimberling Encyclopedia of Triangle Centers

Triangle centers in Clark Kimberling Encyclopedia of Triangle Centers

Section: T and G Mappings - from X(3112) to X(3118)

Triangle Center X(3576)

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3. Cubics và đường cong khác trên Bernard Gibert Cubics in the Triangle Plane

Cubics and higher curves in Bernard Gibert Cubics in the Triangle Plane

Symgonal Quintic Q011

Generalized Darboux and Lucas Cubics

Quang Tuan Bui Cubic K425

On a Class of Focal Cubics

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4. Đường tròn Ác si mét trên Floor van Lamoen Online catalogue of Archimedean circles

Archimedean circles in Floor van Lamoen Online catalogue of Archimedean circles

Các đường tròn từ 41 đến 46

Archimedean circle 41: Reflection of Triplet circle through O’

Archimedean circles 42a and 42b: QTB circles

Archimedean circle 43: Reflection of (A₁₆) through M

Archimedean circles 44a and 44b: First QTB Powerian pair

Archimedean circles 45a and 45b: Second QTB Powerian pair

Archimedean circles 46a, 46b, 46c, 46d: The Common tangent quadruple

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5. Kết quả trên Alexander Bogomolny Cut The Knot

Results in Alexander Bogomolny Cut The Knot

Cyclic Hexagon

Relations in a Cyclic Polygon

An Extension of van Schooten’s Theorem

Tangent Circles in a Parallelogram

Octagon in Parallelogram

Carpets in a Quadrilateral II

Golden Ratio in an Irregular Pentagon

Golden Ratio in an Irregular Pentagon, Construction I

Euclid I.43 Extended

Three Congruent Circles by Reflection

Three Congruent Circles by Reflection II

Two Congruent Circles by Reflection

Three Congruent Circles by Reflection III

Concyclic Points in Equilateral Bumps

Two Intersecting Circles

Triangles with Equal Area IV

Triangles with Equal Area V

Six To Nine Point Circle

Five Concyclic Points

Pythagorean Theorem Proof #64

Four Crossing Circles

A Property Of Centrally Symmetric Hexagons

Six Circles Theorem (Bui Quang Tuan)

Two Triplets Of Concurrent Circles

The Broken Chord Theorem: Proof by Bui Quang Tuan

Pythagoras’ From Broken Chords

Touching Circles With Given Centers II

A Lemma of Equal Areas

Pythagoras’ from Bottema’s

Golden Section in Two Equilateral Triangles

Golden Section in Two Equilateral Triangles II

A Proof of the Pythagorean Theorem with Orthocenter and Right Isosceles Triangles

A Newly Born Pair of Siblings to Archimedes’ Twins

Integers With Digits 1 and 2 and Residues Modulo Powers of 2

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6. Thành viên các FORUM Toán Học:

Member of Mathematical FORUMS:

+ Hyacinthos Group từ February 22, 2006

+ CTK Exchange Forums từ June 23, 2007

+ MathLinks Forum từ August 04, 2008