Choose 3 small sticks with lengths of 5 cm, 6 cm, 7 cm, and 8 cm to place triangles. How many can you place? What is the side length of each triangle?
在长度分别是5厘米、6厘米、7厘米、8厘米的小棒中任选3根摆三角形，你能摆几个？每个三角形的边长各是几厘米？
<result>4</result>