Will a triangle with sides 20cm, 15cm, 25cm be rectangular?

As we reliably know from the school curriculum in geometry, for triangles of this type, the square of the larger side will be equal to the sum of the squares of the other two sides.

Let us determine the large side of the triangle, based on the data on their lengths in the condition of our task:

20 cm> 15 cm;

20 cm <25 cm.

Determine whether a triangle that has the specified side lengths can be rectangular:

25 ^ 2 = 625;

20 ^ 2 = 400

15 ^ 2 = 225;

400 + 225 = 625;

625 = 625.

Answer: Yes, the indicated triangle is rectangular.