12个边的多边形叫十二边形 12个面的多面体叫十二面体,其中正十二面体是五个正多面体之一。 12是三维空间中的接吻数 在三维欧几里德空间中的球装问题,把单位球绕单位球相切,可以放进12个球(开普勒猜想) 在多面体方面,12是立方体和正八面体的边数,是正二十面体的顶点数量、也是截半立方体和截角四面体的顶点数...
百度试题 结果1 题目 4 (a) A regular polygon has 12 sides.Work out the sum of the interior angles of the polygon.1800...[2] 相关知识点: 试题来源: 解析 1800 反馈 收藏
A polygon with eight sides is called: A. a hexagon B. a heptagon C. an octagon D. a nonagon 相关知识点: 试题来源: 解析 C。本题考查多边形的名称。有八条边的多边形称为八边形,即 octagon ,所以选 C 。选项 A 是六边形。选项 B 是七边形。选项 D 是九边形。
A. It is a pentagon with five sides. B. It is a heptagon with seven sides. C. It is an octagon with eight sides. D. It is a hexagon with six sides. 相关知识点: 试题来源: 解析 D。本题考查多边形的名称。A 选项是五边形;B 选项是七边形;C 选项是八边形;D 选项是六边形,与题目中...
题目A polygon cannot have ( ) sides. A: 2 B: 3 C: 4 D: 21 相关知识点: 试题来源: 解析 AA polygon must have 3 or more sides.一个多边形不可能有( )个边.A. 2B. 3C. 4D. 21多边形必须具有3个以及以上的边.故选A. 反馈 收藏
百度试题 结果1 题目What is a polygon with six sides called?A:HexagonB:OctagonC:TrapezoidD:Pentagon 相关知识点: 试题来源: 解析 A Hexagon 反馈 收藏
1) A polygon with nine sides.九边形2) chiu-pien 九边 1. Jiajing and late Ming are two major historical periods that chiu-pien(the nine frontier fortifications system)theories shaped and evolved. 嘉靖和晚明是明代九边说法形成与演变的两个主要时期。 更多例句>> ...
Area of a polygon with “ n “ sides and “ a “ length =$\frac{n}{4}$x a2xcotcot $\frac{\pi}{n}$ How to find the area of a polygon using the polygon calculator? We now know the formula for finding the area of a polygon if we know one of its sides as well the number...
A polygon has 9 sides. The sum of its interior angles is: A. 1260 degrees B. 1440 degrees C. 1620 degrees D. 1800 degrees 相关知识点: 试题来源: 解析 A。根据公式 (n - 2) × 180,边数 n = 9,内角和为 (9 - 2) × 180 = 1260 度。
1.the number of diagonals(对角线) that can be drawn in a regular polygon with twenty sides(正12边形)is___?2.the areas of the faces of a rectangular box are 84 cm2(平方厘米啦)、70cm2 and 30cm2.The volume of the box in cm3 is___ 相关知识点: 阅读 文言文阅读 文言题类 文言文...