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梯形折纸
Author:
孟宝兴
GeoGebra
New Resources
Reflection = 180° Rotation about a Line
bewijs stelling van Pythagoras
Reflection across a line
רישום חופשי
apec
Discover Resources
Matek 01
Ski Jump
More arcs and angles
Point and Line Segment
Discover Topics
Vectors 2D (Two-Dimensional)
Ellipse
Arithmetic Operations
Straight Lines
Complex Numbers