Go Geometry Education: Orthocenter

Online Plane Geometry: Circumcircle of a Triangle, Circumcenter, Circumradius

Circumcircle of a triangle - Table of Content 1

Circumcircle Index

Triangle Centers.

Distance between triangle centers

Distances between Triangle Centers Index.

Nine-Point Center, Nine-Point Circle, Euler Line (English version).
Circumcenter, Centroid, Orthocenter, Circumcircle
Interactive illustration.

Poly for iPad

Poly for iPad.
Polygonal Art, Delaunay Triangulation.

Lemoine Line Theorem

Lemoine Line Theorem, Interactive illustration.
HTML5 Animation for iPad and Nexus

Dynamic Geometry: Lemoine Line of a Triangle. HTML5 Animation for Tablets (iPad, Nexus..)

GeoGebra, Dynamic Geometry: Lemoine Line of a Triangle.
HTML5 Animation for Tablets (iPad, Nexus..)

Dynamic Geometry: Simson Line of a Triangle. HTML5 Animation for Tablets (iPad, Nexus..)

GeoGebra, Dynamic Geometry: Simson Line of a Triangle.
HTML5 Animation for Tablets (iPad, Nexus..)

Geometry Problem 1005

Geometry Problem 1005.
Triangle, Circle, Circumcenter, Interior and Exterior Angle Bisector, 90 Degree, Perpendicular.

Geometry Problem 1003

Geometry Problem 1003.
Intersecting Circle, Circumcircle, Chord, Secant, Triangle, 90 Degree, Angle, Perpendicular Lines.

Geometry Problem 1002

Geometry Problem 1002.
Triangle, Circumcircle, Cevian, Parallel Lines, Cyclic Quadrilateral, Concyclic Points.

Geometry Problem 1001

Geometry Problem 1001.
Triangle, Circumcircle, Perpendicular, Perpendicular Bisector, Tangent, Collinear Points.

Geometry Problem 987

Geometry Problem 987.
Triangle, Circumcircle, Incenter, Chord, Parallel, Circle, Tangent. GeoGebra, HTML5 Animation for Tablets (iPad, Nexus).

Geometry Problem 950

Geometry Problem 950.
Intersecting Circles, Secant, Cyclic Quadrilateral, Concyclic Points.

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