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Is there a way to make a rectangular prism using the insert shapes feature of powerpoint? I can make a prism out of the cube, but that only gives me control of 2 out of the 3 dimensions.

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There is an alternative way of achieving this which has some advantages and some disadvantages depending on what you are using it for. The steps are as follows:

  • Create a rectangle to represent one side of the prism (via Shapes -> Rectangle).
  • Right-click the rectangle and choose Format Shape....
  • Choose 3-D Format tab.
  • Choose a depth. You can specify a variety of units including pt (points), px (pixels) and cm (centimetres).
  • Click the 3-D Rotation tab.
  • Choose a rotation from the presets.


  • More realistic 3D (including perspective and lighting).
  • More precise control over the size of each dimension.


  • Cannot connect other shapes to the sides like you can with the other method.


Example of 3D prisms

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I believe that you can control all the dimensions of a cube.

Below is a screen-capture from Office 2007. There are handles to handle every dimension.
Maybe the one you are missing is the yellow handle :

enter image description here

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