Proving the converse of the Pythagorean theorem means that for any triangle ABC with _(1)_ of a, b, and c such that _(2)_ triangle ABC _(3)__
The missing blanks are
(1) side lengths
(2) a² + b² = c²
(3) is a right angle
=======================================
The complete sentence will be as following:
Proving the converse of the Pythagorean theorem means that for any triangle ABC with side lengths of a, b, and c such that a² + b² = c² , triangle ABC is a right angle