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Draw a circle with radius of 12 units and draw the horizontal diameter.
Draw the perpendicular bisector for this line.
Bisect the angle that is formed above the horizontal line.
Again, bisect the angle that is formed above the horizontal line: extend this line to the circumference of the circle.
This line will be 12 units long because it is a radius of the circle.
It is a quarter (half of half) of the 90 degree angle and so the incline is 22.5 degrees.
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Sure. _
