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Orthocentre of a Triangle
Author:
Dolly Madan
The concurrence of 3 altitudes is called orthocentre
GeoGebra
New Resources
Icosahedron1
Parallelograms: Quick Investigation
alg2_05_05_04_applet_exp_fxn_flvs
Poorly Drawn Parallelograms 3
alg2_05_05_01_applet_exp_2_flvs
Discover Resources
Transformations
Bisect an Angle - #6 Compass & Straightedge with GeoGebra
inscribed rect - max area_1
All fractions on a number line
Prove ABCD Is a Parallelogram Task Assessment
Discover Topics
Quadrilaterals
Volume
Secant Line or Secant
Parabola
Median Line