Angle Formulas
If e, f, g and h are the tangent lengths from the vertices A, B, C and D respectively to the points where the incircle is tangent to the sides of a tangential quadrilateral ABCD, then the angles of the quadrilateral can be calculated from
The angle between the tangency chords k and l is given by
Read more about this topic: Tangential Quadrilateral
Famous quotes containing the words angle and/or formulas:
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