Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？

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Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？
Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?
随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？

Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？
什么是概率,这三件可以形成一个三角形?
随机将线段分成三个部分.多少的概率,这三件可以形成一个三角形?
设线段（0,a)任意折成三段长分别为x,y,a-x-y,显然有x>0,y>0,a-x-y>0,满足这三个约束条件的(x,y)在平面直角坐标系中的可行域为一个直角三角形,其面积为:(1/2)a^2.
三段长能构成三角形的条件是：任意两边之和大于第三边,也就是：
x+y>a-x-y,a-x-y+x>y,a-x-y+y>x同时成立
即 x+y>a/2,y 0,satisfy the three constraints (x,y) in the plane at right angles coordinate system of the feasible region of a right triangle,the area of:(1 / 2) a ^ 2.
Three paragraphs long to constitute a condition of the triangle:the sum of any two sides is greater than the third side,that is:
x + y> a-x-y,a-x-y + x> y,a-x-y + y> x at the same time set up
That is,x + y> a / 2,y

如上

http://www.cut-the-knot.org/Curriculum/Probability/TriProbability.shtml

Randomly cut a line segment into three pieces.What is the probability that these three pieces can form a triangle?随机地将一直线段分成三段.这三段可以形成三角形的概率为多大？ We should wait_____,not_____in line.A.at line,cut B.in line,cutting C.in line,cut D.for line,cut请快答 cut in line可以表达为cut in a line吗 cut in line造句, cut in line造句, cut in front of you in a line还是cut in the front of you in a line为什么 英语翻译cut on the trendy dotted line.Using scissors to cut along your destiny.Shape your style,darw a line 16 inches toward your bottom line. when I was waiting in line somebody__.then I got angry.A.wait in line B.wait in a line C.cut in line D.cut in a line 选择题when.When I was waiting in line,somedoby_____.Then I got angry.A.wait in line B.wait in a line C.cut in line D.cut in a line cut in line never cuts in line. If someone cut in front of you in a line,.意思是如果有人在你前面插队,.插队应用cut in line ,此处为何用 cut in a line?请问cut in line 与 cut in a line区别 cut in line等于啥? Our teather often asks us_(not cut)in line when we're waiting for a bus cut in(还是into) the line--Hi,Jim.Please don't cut _____ the line--Sorry,I'll join the line right away.A.into B.off C.at D.inA还是D,理由? cut in line的统一短语是什么 cut in line=— — — 英语作文Don`t cut in line don't cut in line 作文