In ΔPQR, PQ = 5 cm, QR = 12 cm and PR = 13 cm, then PQR is
A. an acute angled triangle
B. a right angled triangle
C. an obtuse angled triangle
D. an equilateral triangle
Answer:B
In ΔPQR, PQ = 5 cm, QR = 12 cm and PR = 13 cm, then PQR is
A. an acute angled triangle B. a right angled triangle C. an obtuse angled triangle D. an equilateral triangle