Which relationship is always correct for the angles p, q, and r of triangle ABC?

A) p + r = q
B) p + q + r = 180 degrees
C) p + q + r = 90 degrees
D) q + r = p

Which relationship is always correct for the angles p q and r of triangle ABC A p r q B p q r 180 degrees C p q r 90 degrees D q r p class=