(p^2 + q^2), 2pq, (p^2 - q^2) are sides of a _____ triangle

1) right angled
2) acute angled
3) obtuse angled
4) Cannot be determined by me

• 1) right angled
  
  because
  (p^2 + q^2)^2 = ( 2pq)^2+ (p^2 - q^2)^2
• 12 years agoHelpfull: Yes(0) No(0)