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Two triangles... equal?
Author:
Simon Gregg
Topic:
Triangles
GeoGebra
Move round the corners of this triangle. What do you notice?
New Resources
Drag that Point!
Angles and Intersecting Lines: Quick Investigation
Cross Product in 2D and 3D
Ellipse, Hyperbola and Circle as Envelopes
van Aubel's Theorem
Discover Resources
Circle to Circle Collision
Angle Bisectors
Construction Practice A+B
Vibrations
Tessellations
Discover Topics
Unit Circle
Expected Value
Volume
Matrices
Integral Calculus