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Author:
Angie Herzog
New Resources
apec
從邊長辨認四邊形
The Red Chair
畫三角形
Colors for GeoGebra
Discover Resources
true/triangle-areas.ggb
Geogbra testing
Normal distribution
伐里農定理伸延形式：「反射1 : n」之幾何規律
Animated unit circle sine curve
Discover Topics
Probability
Median Value
Variance
Cosine
Ratios