When making a multiangle lamp, you can get derectly the angle
of a glass piece from the slope angle of the lamp by the table
You can make a pattern paper easily from a lamp silhouette by this.
For example of a hexagon lamp, if you want to make a lamp with 80 degrees of slope angle, you should see 80 degrees on Ａ and 6 on Ｂ and get 85 degrees for a under corner angle of a glass piece.
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