START First steps Deutsch Plane and sphere : Planar triangles

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From three (almost) arbitrary input quantities of a planar triangle all other quantities are computed, optionally including an . If two solutions exist, both are computed.

Angle unit    Note

QuantityValue
planar triangle
and its quantities

F = area of the triangle
u = perimeter of the triangle
r = radius of inscribed circle
R = radius of circumcircle

If the foot of an altitude is outside a side, one part p or q of this side will be given negative.

Did you know? Missing weights signify errorfree values (weight ∞)