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6.1 作经过直线外一点的平形线
Author:
郑凯耀
,
Sébastien Vieilhescazes
GeoGebra
New Resources
Variation Theory Parallelogram Proofs
Blancmange curve (fractal)
Poorly Drawn Parallelograms 3
Parallelograms: Quick Investigation
Icosahedron1
Discover Resources
Transformation Project applet
A Trirectangular Triangle
Perpendicular to point on line
Animation 256
Par ou Ímpar
Discover Topics
Isosceles Triangles
Trigonometry
Constructions
Standard Deviation
Curve Sketching