因为相对于单一的背景，他有一个边缘分明的外观，所以，使用多边形套索工具选取他是十分容易的。

As he is a hard edged surface against a flat background it should be fairly easy to select him using the Polygonal Lasso Tool.

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使用多边形套索工具选择并删除旧脑袋。

Use the Polygonal Lasso Tool to select and delete it.

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使用多边形套索工具(L)，然后在矩形上面做一个三角形的选区。

Select the Polygonal Lasso Tool (l), and then make a triangular selection around the bottom corner of the rectangle.

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