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創意九宮格
Author:
spkwan
Topic:
Symmetry
Reference:
http://nrich.maths.org/1886/note
GeoGebra
New Resources
Identify Opposite, Adjacent, Hypotenuse
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Proving Triangles Similar by Dilation
Untitled
Text with alpha background color
Discover Resources
Activity 12-1
Area between curve and axe
morley_LabelingObjects
midsegments
#1,5
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