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Regular pentagram using the star shape


Mike Allen

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In trying to figure out the variables used to create the star shape in the Advshaps catalog, I stumbled upon an easy modification to create a regular pentagram.

1) Select the star as an IntelliShape.

2) Right-click and select IntelliShape properties.

3) Click the Variables tab and check the Show Formulas box.

4) Change the number of grooves to 5.

5) Multiply the Depth of Groove (Variable\Number[5] * 1.618)

 

1.618 is a close approximation of the ratio phi, which on a regular pentagram, is the ratio of the distance between 2 adjacent points to the distance between the top point and one of the bottom points.

 

index.php?act=Attach&type=post&id=874

 

pentagram.gif

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