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Ruler
Author:
Anthony OR 柯志明
Drag the ruler to move. Drag the red point to rotate. Use the slider to adjust the length.
GeoGebra
Anthony Or GeoGebra Institute of Hong Kong
New Resources
Bottema's Theorem
Rose Curve - A Classical Construction
Introduction
Supplementary Angles
Play C3 E3 G3 C4_C4
Discover Resources
Forum_37038_B_OnClickOnUpdateTimeOut
Perpendicular Bisector
平行四邊形 2
Constructing Angle Bisectors: Ex. 11
Intersection of a line and a circle
Discover Topics
Statistics
Reflection
Right Triangles
Cylinder
Power Functions