Given three collinear points A,B,C and three further collinear points A′,B′,C′, then the points
are collinear. This is a degenerate case of Pascal’s theorem.
Pappus’ Hexagon Theorem
科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。