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Broken Protractor
Author:
John Ulbright
Topic:
Angles
What angle measure is indicated by the red arrow? Click "more info" to refine your guess.
GeoGebra
New Resources
Ellipse, Hyperbola and Circle as Envelopes
Simplifying Radicals: Geometric Thin Slice
Simplifying Radicals: Geometric Thin Slice
Linear Cross Section Exercise
Rotating Points (Optical Illusion)
Discover Resources
Venus and Earth
Rolling Circle
TESt
AM 2010 P2 Q6
Perspektiv glassplater
Discover Topics
Upper and Lower Sum or Riemann Sum
Intersection
Vectors 2D (Two-Dimensional)
Plane Figures or Shapes
Right Triangles