
Position along the arc
Equation 
Since the perimeter of a circle is $2\pi r$, half Sum (1) ($a$) along the circle will correspond to the arc spanned by opposite Leg ($\theta$), so:
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$s$
Half Sum (1)
$m$
6294
$\theta$
Opposite Leg
$rad$
5059
$r$
Radius
$m$
9894
ID:(3324, 0)

Relation of similarity of Triangles
Equation 
$\displaystyle\frac{\bar{AB}}{\bar{A'B'}}=\displaystyle\frac{\bar{AC}}{\bar{A'C'}}=\displaystyle\frac{\bar{BC}}{\bar{B'C'}}$
ID:(3263, 0)