When is a rhombus a square?什么意思还有几个： 1.When is a parallelogram a rectangle? 2.When is a parallelogram a square? 3.When are the properties of a rhombus? 4.How do you find the area of a quadrilateral? 知道的来,不知道就别乱

When is a rhombus a square?什么意思还有几个： 1.When is a parallelogram a rectangle? 2.When is a parallelogram a square? 3.When are the properties of a rhombus? 4.How do you find the area of a quadrilateral? 知道的来,不知道就别乱 一道gre数学题目A rhombus has a base of 10 and a height of 4the area of the rhombus的数值大还是the perimeter of the rhombus的数值大,谢谢,我不知道怎么算也 ABCD is a rhombus where A=(-3,0),B=(0,4),C=(5,4) and D=(2,0) Prove that the diagonals are perpendicular bisectors of on another.网上是这样说的：.因为ABCD is a rhombus[ABCD是菱形],所以the diagonals are perpendicular bisectors of on anot 2道英语数学题1.ABCD is a rhombus where A=(-3,0),B=(0,4),C=(5,4) and D=(2,0) Prove that the diagonals are perpendicular bisectors of on another.2.Prove that the point (-1,2genhao2),(genhao3,-genhao6)and (-genhao5,2) all lie on a circle with cent When is a door not a door? When is a door not a door? when is a person not a person? when work is a pleasure,life is a joy! 翻译when there is a road,there is a will when there is a will there is a There is a time when we should 求when a child is born中文歌词 when a child is born吉他谱 When a child is born童声版 What is important when arranging a course? A good thing know when it is When A Heart Is Broken 歌词 When a friend is good to是