Reverse Pythagorean theorem

Given are lengths of the sides of the triangles. Decide which one is rectangular:

Δ ABC: 77 dm, 85 dm, 36 dm Wrong answer
Δ DEF: 55 dm, 82 dm, 61 dm Wrong answer
Δ GHI: 24 mm, 25 mm, 7 mm Wrong answer
Δ JKL: 32 dm, 51 dm, 82 dm Wrong answer
Δ MNO: 51 dm, 45 dm, 24 dm Wrong answer



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Tips to related online calculators
Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

Following knowledge from mathematics are needed to solve this word math problem:

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