triangle can be formed by taking three points on the plane that are not on the same straight line as vertices. Now there are 10 points on the plane, and any three of them are not on the same straight line, then the triangle with these 10 points as vertices How many are there?
以平面上不在同一条直线上的三个点为顶点可以连成一个三角形，现在平面上有10个点，并且其中任意三点都不在同一条直线上，则以这10个点为顶点的三角形共有多少个．
<gadget id="calculator">10 * 9 * 8</gadget>
<output>720</output>

<gadget id="calculator">720 / 6</gadget>
<output>120</output>

<result>120</result>