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GeoGebra
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Quadrilateral Tester
Author:
Norm Krumpe
To test out different quadrilaterals, you can either drag points A, B, C, and D, or you can manually type in their coordinates on the left side of the screen.
GeoGebra
New Resources
Average Rate of Change: Graph a Function (1)
Icosahedron1
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Variation Theory Parallelogram Proofs
探究由平行線和截線所成的角
Discover Resources
Obscuration by the horizon - Scaled 1/100 in X
Exact Values on the Unit Circle (degrees)
pd 1 class data
รูปคลี่พีระมิด
Great Circle
Discover Topics
Geometric Transformations
Piecewise Functions
Angles
Median Line
Fractal Geometry