Fill any two of a, b and c and the third is solved. Fill all three to test whether a triangle is right-angled (the converse of the theorem).
Find any missing side of a right triangle — a leg or the hypotenuse — plus both acute angles, area, perimeter and the altitude to the hypotenuse, with the squares-on-sides diagram, worked steps and a triple check.
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Find any missing side of a right triangle — a leg or the hypotenuse — plus both acute angles, area, perimeter and the altitude to the hypotenuse, with the squares-on-sides diagram, worked steps and a triple check.
Legs 3 and 4 give a hypotenuse of 5 and area of 6. Entering hypotenuse 13 with leg 5 instead solves the missing leg as 12, and 6-8-10 is flagged as a Pythagorean triple (the 3-4-5 family ×2).
Fill any two of a, b and c and the third is solved. Fill all three to test whether a triangle is right-angled (the converse of the theorem).
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