Question

angle Q R and angle R of a triangle pqr are 25 degree and 65 degree is angle pqr a right angle triangle ? more over PQ is 4 cm and PR is 3 cm

Answer 1

I THINK IT IS A RIGHT ANGLE TRIANGLE..
BECAUSE:
it is sure from the equation that triangle is right angled at P and proof:
PQ= 4cm PR=3 cm 
then by pythogorous theorem, PQsquare+PRsquare=QRsquare.
then, 
    4 square +   3 square = QR square
    16+9=QR Square
    25 = QR square
     5 = QR
SO IT IS RIGHT TRAINGLE