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凹透鏡 Concave Lens
Author:
Alex CHIK
Drag the grey/ red points to change positions of the object. Drag the black point to change source of light.
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
Witch of Agnesi - A Classical Construction
Play C3 E3 G3 C4_C4
Piano. Keyboard.
Teorema Japonês para quadriláteros inscritos em uma circunferência
Rotating Points (Optical Illusion)
Discover Resources
Κύκλοι διάκεντρος συμμετρία
naujas_7777777
day 110
sin(2θ) and cos(2θ)
Second Proof of Pythagorean Theorem by Shear Transformation
Discover Topics
Standard Deviation
Percentages
Step Functions
Algebra
Random Experiments