# 測量角度

「測量角度」工具位於[工具列](/zh-tw/formit-introduction/tool-bars.md)上。

「測量角度」工具用於測量不同頂點、邊、面和體積之間的角度。您也可以使用「測量角度」工具來驅動幾何圖形的尺寸。

* 從 **「測量」** 工具列功能表中，選取 **「測量角度」** 工具，或使用鍵盤快速鍵 **M A**，然後選取起點。

  <img src="/files/O7JDkWSoUVjO9ZaCKHBr" alt="" data-size="original">
* 按一下控點，並拖曳至起始頂點。

  <img src="/files/K2cxJgOv4hsVPS7W4bA0" alt="" data-size="original">
* 使用箭頭測量一點與另一點之間的角度。

  <img src="/files/qwx1O30HH2iOiFuymjYV" alt="" data-size="original">
* 若要變更幾何圖形，請按一下邊或面，然後按一下顯示的角度來輸入新角度值。

  <img src="/files/QlxH2p36sHnLeq76Vjnw" alt="" data-size="original">
* 您的變更或測量會顯示：

  <img src="/files/ej3Vz0mjlIFrqnDFRSy5" alt="" data-size="original">


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