錐形
From Wikipedia, the free encyclopedia
錐形係直角三角形兜得佢嗰一隻直角邊旋轉一周得出嗰立體。
錐形嗰圓形面叫底面，尖端叫頂點，直角三角形嗰斜邊叫圓錐嗰母線。
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