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Parallel and Perpendicular Lines
Author:
Keaton Galloway
GeoGebra
New Resources
alg2_05_05_01_applet_exp_flvs
探究由平行線和截線所成的角
alg2_05_05_01_applet_exp_2_flvs
Poorly Drawn Parallelograms 3
Variation Theory Parallelogram Proofs
Discover Resources
Tchebychef's linkage
Parallelogram AB1
congruence_RHS
Simple Rectangle Pretty
Copying an angle
Discover Topics
LCM and GCD
Similar Triangles
Means
Frequency Distribution
Isosceles Triangles