Triangle Wheel (For Plate no. 15)

Triangle Wheel (For Plate no. 15)

Triangles
Most inclined lines are drawn at standard angles using the 45º x 45º triangle and the 30º x 60º triangle.
In addition to drawing angles of 90º, 45º, 30º, and 60º, triangles can be combined to draw angles of 15º increments.

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