There are 2 line segments of 2 cm, 3 cm, and 4 cm each. If any three line segments are selected to form a triangle, what is the possibility of an isosceles triangle?
有2厘米，3厘米，4厘米的线段各2条，任取其中三条线段围成三角形，出现等腰三角形的可能性是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>