Respuesta :

musiclover10045
using the Pythagorean theorem we can tell if it is a right triangle.
 the formula is a^2 + b^2 = c^2
a =9
b =12
c=15

9^2 + 12^2 = 81 + 144 = 225

15^2 = 225

225 = 225 so it is a right triangle

 the answer is TRUE



choixongdong
if right triangle then c^2 = a^2 + b^2

c^2 = 25^2 = 625
a^2 + b^2 = 9^2 + 12^2 = 81 + 144 = 225

SO
c^2 = a^2 + b^2
225 = 225

Conclusion: Yes, triangle LMN is a right triangle.