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動態角=30
Author:
曾強
若ABCD為邊長為2根號3的正方形,P為AB中點,DQ為1,若Q為邊長上的動點,試問有幾個O可以讓角POQ為30度
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第八周作业
兩位數除以一位數(一)
四邊形的特性
【案例】2013年安徽高考15题
柱體建築師
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ddsdsad
分數變身術
Clown
抛物线定义
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Correlation
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