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GeoGebra
GeoGebra Classroom
GeoGebra
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Parallel and Perpendicular Lines in the Coordinate Plane
Author:
Tim Brzezinski
Note the EXACT SLOPE tool (with blue background).
GeoGebra
Quick (Silent) Demo
New Resources
Dissections by Guillermo Bautista
Icosahedron
Poorly Drawn Parallelograms
Tutorial: Create lists of numbers and objects
Exploring the Derivative of a Quadratic Function
Discover Resources
Lesson 8
robot 1
Unit Circle (Malleable)
IC Window
Coulomb's Law With Point Charges
Discover Topics
Cuboid
Centroid or Barycenter
Expected Value
Surface
Logarithm