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Ruler
Author:
Eduardo Neto
,
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
Roman Numerals Bingo
Rings of circles
Oriented Angles and the Unit Circle
Flag in the wind
Is it Isosceles?
Discover Resources
Isosceles Triangle
orthocentre
r = 0
Kowhaiwhai pattern 4
Parabola Animated Formation
Discover Topics
Upper and Lower Sum or Riemann Sum
Linear Functions
Statistical Characteristics
Standard Deviation
Ellipse