let t be an equilateral triangle whose sides are of length 1

风95272022-10-04 11:39:541条回答

let t be an equilateral triangle whose sides are of length 1 unit .show that if any five points are

已提交，审核后显示！提交回复

let t be an equilateral triangle whose sides are of length 1 let t be an equilateral triangle whose sides are of length 1 unit .show that if any five points are chosen lying on or insides the triangle ,then two of them must be no more than 1/2 unit 芹菜秦1年前2: 笨笨的小鱼huaha 共回答了14个问题 | 采纳率92.9%

一个边长为1的正三角形,在这个三角形边上或者内部任取2个点,是否这2个点的距离都不会大于1/2

1年前查看全部

In the figure above,equilateral triangle ABC is inscribed in In the figure above,equilateral triangle ABC is inscribed in the circle.If the length of arc ABC is 24,what is the approximate diameter of the circle? (A) 5 (B) 8 (C) 11 (D) 15 (E) 19 the length of arc ABC 究竟指什么?是三角形ABC的周长么?可我用周长做,2,明显选B,为什么正确答案是C? 元味畅快04101年前3: ylredfox 共回答了27个问题 | 采纳率100%

.Arc=弧度
因为是equilateral triangle（等边三角形）,arc AB,BC,CA的长度必须是相等的.也就是说,Arc ABC的长度是24的话,这三段Arc分别是12,那这个圆的周长就是36.
周长的公式：P= πd
d是直径,所以就是P÷π,周长除以 π而已.
36÷3.14=11.46.最接近的数字是11.所以是C.
恩.结论就是,基本公式要背熟

1年前查看全部

英语翻译Construct a square on one side of an equilateral triangl 英语翻译 Construct a square on one side of an equilateral triangle.On one non-adjacent side of the square,construct a regular pentagon,as shown.On a non-adjacent side of the pentagon,constrct a regular hesagon.continue to construct regular polygons in the same way,until you continue to construct regular poygons in the same way,until you construct an octagon.How many sides does the resulting qolygon have? 刚才打错了Construct a square on one side of an equilateral triangle.On one non-adjacent side of the square,construct a regular pentagon,as shown.On a non-adjacent side of the pentagon,construct a regular hexagon.Continue to construct regular polygons in the same way,until you construct an octagon.How many sides does the resulting qolygon have? 彩虹的爱恋1年前2: 家庭hh学共回答了18个问题 | 采纳率88.9%

构建在一个等边triangle.On的一个非相邻的正方形并排广场,构造一个正五边形,如图所示.在五角大楼的非相邻方,构建一个正六边形.继续建设以同样的方式正多边形,直到您构建一个octagon.How多方面造成qolygon是否有?

1年前查看全部

the vertices of an equilateral triangle are on a circle. the vertices of an equilateral triangle are on a circle. 比较三角形边长和圆的直径谁大? 上斜阳1年前1: windmzz 共回答了13个问题 | 采纳率92.3%

The vertices of an equilateral triangle are on a circle.
　　The length of a side of the triangle The diameter of the circle
　　在拿到题目的时候就应该在脑海中形成这样一个图像：一个等边三角形内接在一个圆里面.那么所有的数值都可以算出来,先不要看题目,我们心算出圆的半径和等边三角形的一个边的关系：1：√3,其他关系,比如三角形和圆面积的关系也可以都算出来,这时候再来看题目的两个题肢：三角形一个边的边长,和圆的直径(注意是直径不是半径),他们的比值就是√3：2,也就是1.732:2 (这些基本的数值要知道)那么很显然就是选B.

1年前查看全部

帮我翻译一道数学题the base of a solid is an equilateral triangle of s 帮我翻译一道数学题 the base of a solid is an equilateral triangle of side s, with one vertex at the origin and altitude of the triagle lies along the x-axis . each plane section perpendicular to the x-axis is a square, one side of which lies in the base of the solid. find the volume of the solid kuang_qq1年前1: vink_ly 共回答了13个问题 | 采纳率100%

一个多面体的底面是边长为s的等边三角形,等边三角形的一个顶点在原点,高在x轴上,每个与x轴垂直的剖面都为正方形,剖面的一条边位于底面内,求多面体的体积

1年前查看全部

On each side of a unit square,an equilateral triangle of sid On each side of a unit square,an equilateral triangle of side length 1 is constructed.On each new side of each equilateral triangle,another equilateral triangle of side length 1 is constructed.The interiors of the square and the 12 triangles have no points in common.Let R be the smallest convex polygon that contains R.What is the area of the region that is inside S but outside A 1/4 B √2/4 C 1 D√3 E 2√3 Let R be the region formed by the union of the square and all the triangles,and let S be the smallest convex polygon that contains R. 牛头1年前0: 共回答了个问题 | 采纳率

查看全部

On each side of a unit square,an equilateral triangle of sid On each side of a unit square,an equilateral triangle of side length 1 is constructed.On each new side of each equilateral triangle,another equilateral triangle of side length 1 is constructed.The interiors of the square and the 12 triangles have no points in common.Let R be the region formed by the union of the square and all the triangles,and let S be the smallest convex polygon that contains R.What is the area of the region that is inside S but outside A 1/4 B √2/4 C 1 D√3 E 2√3 wk01261年前1: 喊宝宝共回答了25个问题 | 采纳率88%

答案是A,其实画个图就清楚了,边长为1的正方形（unit square) 连同周边12个正三角形组成一个新的边长为2的正方形,要使包在正方形外面的八边形面积最小,只有A是正确的,BCEDE的话面积都比1/4的时候大.

1年前查看全部

一道澳洲的高数题求解12 A frame in the shape of an equilateral triangle 一道澳洲的高数题求解 12 A frame in the shape of an equilateral triangle encloses three circular discs of radius length 5 cm so that the discs touch each other.Find a） the perimeter of the smallest frame which can enclose the discs b） the area enclosed between the discs. 就是说一个等边三角形框框里塞了三个半径为5cm的圈圈正好塞满,求 a 三角形框框的周长 b 三角形框框减去三个圈圈的面积 一道vce的高数题 别逼我做kk1年前0: 共回答了个问题 | 采纳率

查看全部