单词	edge
释义	Edge For a polygon: A line segment on the boundary joining one vertex (corner point) to another. Example: This pentagon has 5 edges. For a polyhedron: A line segment where two faces meet. Example: This tetrahedron has 6 edges: See: Line Segment
随便看	deviation diagonal diagram diameter diamond dice die difference difference of squares difference quotient differential equation differentiation digit digital digital clock or watch digital root dilation dimension dimensions dipyramid directed number direction directrix discount discrete data

数学辞典收录了1200条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。