∑di over vertices of even degree and 2e are both even numbers什么意思

∑di over vertices of even degree and 2e are both even numbers什么意思 Since ∑ d over vertices of even degree and 2e are both even numbers什么意思 what is the number of faces of a polyhedron if it has 6 vertices and 12 edges? 用gambit划分网格时出现all vertices of face were changed back to their origional types, the vertices of an equilateral triangle are on a circle.比较三角形边长和圆的直径谁大? 英语翻译请翻译为中文,不要机器,要准确,Over the next 18-24 months,This Action will work to enlist commitments from leaders of business to participate in a International Business Summit and multilateral negotiations,conducting direct di over a cup of A n-faced regulat polyhedron consists of 2n edges and (2n-4) vertices.find the n 这是我一个香港朋友的题, 请问这题 应该怎么算面积啊?The vertices of a rectangle are A(-2,5),B(2,5),C(2,-1) and D(-2,1) respectively. 英语翻译To mesh the domain,a boundary mesh is generated at first,which is,following ,a mesh whose sole vertices are the members of Y. All vertices of face wall were changed back to their original types请教大家,gambit划分网格出现这样的错误是怎么回事?如何解决? 英语翻译determine how to distribute an addition mass of 6 g at the three vertices of the plate to move the balance point of the plate to (2,2).[Hint:Let w1,w2,and w3 denote the masses added at the three vertices,so that w1+w2+w3=6]原题目见图 英语翻译The large square has an area of 100 square meters.The vertices of the other square lie at the midpoint of the sides of the larger square.What is the area of the smaller square? 求翻译.i want to take a trip .all over di world 英语翻译A solid tetrahedron is sliced off a wooden unit cube by a plane passing through two nonadjacent vertices on one face and one vertex on the opposite face not adjacent to either of the first two vertices.The tetrahedron is discarded and the over a period of time these days over of good 初中英语阅读题：Zheng He,the Columbus of the East,was an amazing man.He was born in 1371 and,11 years later,was caught by the army of a rich young man called Zhu Di and made to work for him.Over time the rich man saw that Zheng He was very cl