If three line segments a, B and C satisfy that a square equals C square minus b square, is this a right triangle? Why

If three line segments a, B and C satisfy that a square equals C square minus b square, is this a right triangle? Why

According to the Pythagorean theorem: A2 + B2 = C2 is a right triangle
If only three strings are broken, where is the triangle

: if three line segments A.B.C satisfy that a is equal to C minus B, then is the triangle composed of these three line segments a right triangle? Why

Yes
because
A = C minus B
It can be seen as
A + B = C
According to Pythagorean theorem
A triangle composed of three line segments is a right triangle

If the difference between the squares of the two sides of a triangle is equal to the square of the third side, then the triangle is a right triangle?

Yes, this is the deformation of the right triangle criterion