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Orthocentre of a Triangle
Author:
Dolly Madan
The concurrence of 3 altitudes is called orthocentre
GeoGebra
New Resources
Reflection Across 2 Parallel Lines
Locus Related to Descartes' Folium
Exploring GeoGebra for the First Time
Triangle with 3 Right Angles
seo tool
Discover Resources
Pred461 the Triangle Inequality Theorem
Tangent
GoGeometry Action 183!
A new generalization of Bottema's theorem
Sequencial limits: Convergent
Discover Topics
Median Value
Geometric Mean
Linear Programming or Linear Optimization
Fractal Geometry
Special Points