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正弦公式證明 (Mr. KONG)
Author:
timkong
GeoGebra
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【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
判斷球體
柱體建築師
兩位數除以一位數（一）
Discover Resources
Liu Hui's Method of Finding π
與三個半圓相切的圓
reflectional symmetry_1
Trigonometric Ratios of Any Angle
圓周公式應用題2的副本
Discover Topics
Scatter Plot
Random Variables
Probability
Ellipse
Variance