Online Geometry: Tangential or Circumscribed Quadrilateral, Theorems and Problems

Online Geometry

Tangential or Circumscribed Quadrilateral, Theorems and Problems - Index

Tangential or Circumscribed Quadrilateral Index, theorems and problems

Geometry problem 1181

Geometry Problem 1181
Cyclic Quadrilateral and Tangential Quadrilateral, Diameter as a Diagonal, Incenter, Circumcenter.

Problem 910

Geometry Problem 910.
Bicentric Quadrilateral, Distance between the Incenter and Circumcenter, Incircle, Circumcircle, Circumscribed, Inscribed, Circumradius.

Problem 909 Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius

Geometry Problem 909.
Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius, Distance.

Problem 908 Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius

Geometry Problem 908.
Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius.

Problem 907 Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius

Geometry Problem 907.
Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Tangent, Inradius.

Problem 906 Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Perpendicular

Geometry Problem 906.
Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Perpendicular.

Geometry Problem 883

Geometry Problem 883
Five Circumscribed Quadrilaterals, Circle, Tangent, Common Tangent.

Two Circles, Tangent Lines

Geometry Problem 817.
Two circles, Tangent Lines, Circumscribed Quadrilaterals.

Tangential Quadrilateral: Pitot Theorem

Geometry Problem 816.
Tangential or Circumscribed Quadrilateral: Pitot Theorem

Tangential Quadrilateral

Tangential or Circumscribed Quadrilateral: Diagonals, Altitudes Theorem.

Tangential Quadrilateral

Tangential or Circumscribed Quadrilateral: Diagonals, Inradii Theorem.

Square, Triangle, Area, Circle

Proposed Problem 371.
Square, Inscribed circle, Triangle, Area.

Tangential quadrilateral

Proposed Problem 352.
Tangential quadrilateral, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.

Rhombus, Circumscribable quadrilateral

Proposed Problem 351.
Rhombus, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.

Six Tangential Quadrilaterals Theorem, Problem 1175

Geometry Problem 1175: Six Tangential or Circumscribed Quadrilaterals Theorem

Eight Point Circle Theorem. Elearning

Eight-Point Circle Theorem
Step-by-Step construction, Manipulation, and animation.

Circumscribed Quadrilateral, Angles

Geometry Problem 724.
Circumscribed Quadrilateral, Circle, Angle, Incenter, Half the Measure.

Elearning 331 Square, Inscribed Circle

Proposed Problem 331.
Square, Point on the Inscribed Circle, Tangency Points.

Area of a triangle

Proposed Problem 322.
Square, Inscribed circle, Tangent, Triangle area.

Newton's Theorem: Newton's Line. Circumscribed quadrilateral, midpoints of diagonals, center of the circle inscribed.

Proposition 7
Square and inscribed and circumscribed Circles

Circumscribed quadrilateral

Proposed Problem 153. Circumscribed Quadrilateral, Diagonals Concurrent with Chords.  

Circumscribed Quadrilateral

Proposed Problem 152. Circumscribed Quadrilateral, Diagonal, Chord, Proportion.  

Proposed Problem 76: Area of a Circle. Square, Circle, Circular Sector.

Proposed Problem 62: Square Diagonal, Inscribed Circle.

Puzzle of the Newton's Theorem: 50 pieces of circles.

 

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