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quadrilaterals 4
Author:
iedc
GeoGebra
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異分母分數減法
【案例】2013年安徽高考15题
第八周作业
三位數除以一位數（一）
GeoGebra笔记功能体验课件
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Angles in the Circumference and the Centre
Ratio of angles at the centre and the length of the arcs.
構成三角形的邊長條件
Triangle (Angle)
圓柱圓錐
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LCM and GCD
Polynomial Functions
Isosceles Triangles
Quadratic Functions
Angles