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정의 7

Author:WoonGu, Hwang

정의 7

‘평면(plane surface)’은 직선들이 쭉 고르게 놓여있는 면이다.

부연설명

평면은 면에서 임의의 두 점을 연결한 직선이 면 위에 다시 놓여 있을 때를 말한다.

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