Odd proportion angles (there is a proportion of the steam angles) of the

**3 (which may be 5,7,9, ...) and the**

__element__**\(\displaystyle 45 ^ o\) (which can be any angle which is obtainable by means of compass and straightedge)**

__base angle__The angle CAB \(\displaystyle 45 ^ o\) can be obtained with a compass and unmarked ruler, he added angles (each have \(\displaystyle 45 ^ o\)) DAC and EAD, obtained angle EAB \(\displaystyle 135 ^ o\)is the

__starting angle__Merge points E (D, C, B) and get a longer ED (DC, CB)

Along the DC from the point C draw is normal that intersects the segment AB, the intersection is a point G

Divider AG and from point G draw a circular arc to a longer EA and H get the point, and the arc GH, join the dots G and H and get along GH

Longer GH (ED, DC, CB) are equal, the arc EB's

**can be made smaller or larger with a constant radius AB, arc GH is the**

__first circular arc__**can be made smaller or larger with a constant radius AG**

__second circular arc__INCREASING THE ANGLE

the starting angle EAB add angle FAE \(\displaystyle 15 ^ o\) get the angle FAB \(\displaystyle 150 ^ o\) - continued in the next post