# 测量角度

“测量角度”工具位于[“工具栏”](/zh-cn/formit-introduction/tool-bars.md)上。

“测量角度”工具用于测量顶点、边、面和体积之间的角度。还可以使用“测量角度”工具来驱动几何图形的标注。

* 在 **“测量”** 工具栏菜单中，选择 **“测量角度”** 工具，或者使用键盘快捷键 **“M A”** 并选择起点。

  <img src="/files/Daa3jxuG8BagsfJXni55" alt="" data-size="original">
* 单击控制柄并将其拖动到起始顶点。

  <img src="/files/QrKswHa9K5vLS671VF1g" alt="" data-size="original">
* 使用箭头测量一个点与另一个点之间的角度。

  <img src="/files/pjeQUq2i5GXbJ0EPf9pf" alt="" data-size="original">
* 要更改几何图形，请单击边或面，然后通过单击显示的角度来输入新的角度值。

  <img src="/files/nuAqdX3Cuejm9R603Tow" alt="" data-size="original">
* 所做的更改或测量即会显示：

  <img src="/files/cAi3rHk7qj7moqxzYuTj" alt="" data-size="original">


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