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triangle 30-60-90
作者：
abpourquoipas
GeoGebra
最新資源
Triangle with 3 Right Angles
Circle Passing Through 3 Points
רישום חופשי
Locus Related to Descartes' Folium
Prism Drawn in 1-Point Perspective
探索資源
Yuppp
Project
Translation_rule1
ch11_vertically_opposite_angle
Drawing a Square by Rotation
探索主題
正切線或正切
微積分
錐體
線性函數
正三角形