For the first step, trace the given shape on tracing paper. Then, choose your reference point, for example, the top right vertex, and draw a dot to represent it on both the given shape ... be shaded ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果