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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
alg2_05_05_01_applet_exp_flvs
Tutorial: Create lists of numbers and objects
探究由平行線和截線所成的角
What is an Isogonal Conjugate?
Blancmange curve (fractal)
Discover Resources
Osculating Circle of The Elipse
Proof-Pt
Congruent Triangles
Animasi grafik sinus
SchachtelFalten
Discover Topics
Correlation
Cosine
Exponent
Solids or 3D Shapes
Derivative