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symmetry
Author:
darina.gluzd
GeoGebra
New Resources
What is an Isogonal Conjugate?
探究由平行線和截線所成的角
Variation Theory Parallelogram Proofs
Tutorial: Create lists of numbers and objects
Poorly Drawn Parallelograms
Discover Resources
ajs work 2
Math
tri more ex 03
Area (I)
Points in a Plane