Circle
"It is he that sitteth upon the circle of the earth, and the inhabitants thereof are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in:" Isaiah 40:22.
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Angles:
degrees
deg
min
sec
radians
grads
full circle
sin
cos
tan
areah
sinh
cosh
tanh
Rectangular/Polar Coordinates:
X
0° E, 0° N
X2
Y
90° E, 0° N
Y2
Z
0° E, 90° N
Z2
radius
R2
angle east
degrees longitude
E2
angle north
degrees latitude
N2
Straight Distance
Arc Distance
Length/Area:
radius
diameter
circumference
area
square units