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직선 가장자리가 있는 원뿔 단면의 양각?

2016-06-10View Original

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큰 끝의 직경은 φ5000이고, 작은 끝의 직경은 φ500이며, 높이는 7800mm입니다. 이를 어떻게 투영해야 하나요?
Reply #22016-06-10
삼각형 방법으로 그리면 되는데, 위의 원과 아래의 원을 동일한 크기로 나누면, 아랫부분은 일반적인 방식으로 그리는 것과 같아집니다

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