Go Geometry Education: Orthocenter

Plane Geometry: Circumcircle, Circumradius of a triangle, Theorems and Problems 4

Circumcircle of a triangle - Table of Content 4

Circumcircle Index


Triangle, Circumcenter, Angle

Problem 476.
Triangle, Circumcenter, Circumcircle, Angles.

Triangle Brocard point

Proposed Problem 457.
Triangle, First Brocard Point, Congruent angles, Circle, Circumcircle, Circumradius, Circumcenter.

Circumradius, Circumcenter, Triangle

Proposed Problem 426.
Triangle, Circumcircle, Circumradius, Circumcenter, concurrent Cevians.

Area of a triangle, Circumcircle, Angle Bisector

Proposed Problem 401.
Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector, Congruence.
Puzzle based on poblem 401.

Triangle, Orthocenter

Proposed Problem 393.
Triangle, Orthocenter, Circumcircles, Congruence, Collinear.

Triangle with squares, Circumcircles

Proposed Problem 370.
Triangle with squares, Circumcircles, Tangent circles.

Triangle, Circumcenter, Incenter, Excenter, Collinear

Proposed Problem 320.
Triangle, Circumcircle, Incenter, Excenter, Collinear points.

Puzzle: Euler Line and Nine Point Center

Schiffler Point: Four Euler Lines with interactive animation and manipulation.
Circumcircle, Circumcenter, Centroid, Orthocenter, and Incenter.

Interactive Simson Line

Interactive Simson Line. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Circumcircle, Circumcenter O.

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