The sides of a triangle are given: 7 cm, 24 cm, and 25 cm. Then the triangle is a ____________.

Let a = 7 cm, b = 24 cm, and c = 25 cm.
Here, the largest side, c = 25 cm
By Pythagorean theorem, we have:

 a² + b² = c²

$\therefore$ LHS = (7)² + (24)² = 49 + 576 = 625 

RHS = c² = (25)² = 625 

$\therefore$ LHS = RHS
Hence, the triangle is a right triangle.