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Triangle Exterior Angle Theorem
Author:
William Richards
Move the vertices of the triangle to explore what happens to the angles.
GeoGebra
New Resources
Slope of a Straight Line: Run and Rise
Piano. Keyboard.
Slope Field (1)
Ellipse, Hyperbola and Circle as Envelopes
Stairs (Optical Illusion)
Discover Resources
Making Pink Paint
PunkteAufKurve03
Wong Jing Hui (32) 1M
Copying a triangle
Circle Project
Discover Topics
Median Line
Difference and Slope
Geometric Transformations
Rectangle
Interest Calculation