There are a batch of thin wooden strips with lengths of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 centimeters, and there are enough of them. Three wooden strips are appropriately selected as the three sides, which can form a a triangle. How many different triangles can you form if the base is 10 cm long?
有一批长度分别为1，2，3，4，5，6，7，8，9，10厘米的细木条，它们的数量都足够多，从中适当选取3根木条作为三条边，可围成一个三角形．如果规定底边是10厘米长，你能围出多少个不同的三角形？
<gadget id="calculator">10 + 8 + 6 + 4 + 2</gadget>
<output>30</output>

<result>30</result>