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Altitudes are concurrent in the orthocenter
Author:
zbilton
Topic:
Orthocenter
GeoGebra
New Resources
Poorly Drawn Parallelograms 2
Construct a Conic
Blancmange curve (fractal)
Poorly Drawn Parallelograms 3
Average Rate of Change: Graph a Function (2)
Discover Resources
Coordinate Graphing
buddy
Test2
picture Construction 4 of Parallelogram Theorem
Demo 1 Angles in the Same Segment
Discover Topics
Complex Numbers
Polynomial Functions
Probability
Hypothesis Testing
Pythagoras or Pythagorean Theorem