Triangle measurements

Area from base and perpendicular height, or area and perimeter from three sides.

Inputs

• Base (mm)
• Perpendicular height (mm)
• Side a (mm)
• Side b (mm)
• Side c (mm)

Assumptions and limitations

Ideal planar triangle. A sloping side is not a perpendicular height. Three-side mode rejects degenerate triangles; irrational decimals are approximate.

Source

Calculation source

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