

Geometry:
Orthocenter of a triangle, Theorems and Problems 
Index 10




Proposed Problem 191. Triangle,
Altitudes, Orthocenter, Squares, Areas. 

Proposed Problem 139. Triangle
Area, Orthic Triangle, Semiperimeter, Circumradius. 

Proposed Problem 79: Triangle.
Similarity, Altitudes, Orthocenter, Incircles, Inradii. 

Geometry Art 41  50.
Triangle, Sangaku, Quadrilateral, Circle, 3060 Degrees. 
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Triangle Centers 
Orthocenter 
Altitude 
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Antonio Gutierrez






