Connect line segments with 4 points on the plane as endpoints, and there can be at most 〔〕 triangles in the formed figure.
以平面上4个点为端点连接线段，形成的图形中最多可以有〔〕个三角形．
<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<result>8</result>