Are 21, 28, & 35 a Pythagorean Triple
Yes, they are a Pythagorean Triple.
You need to check it by applying Pythagoras theorem:h² = p² + b²35² = 21² + 28²1225 = 441 +7841225 = 1225L.H.S = R.H.SSo, Yes, this is a Pythagorean TripleHope this helps!