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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
Monge's Theorem
Tube at distance of a 3D curve.
task1_lightBulb
seo tool
Trophy
Discover Resources
Adding and Subtracting Fractions
book 2 tesselation
One Special Type of Triangle
Time
Parametric Curve Display
Discover Topics
Line Segment
Rational Numbers
Polygons
Set Theory
Translation