Question 4 (i)
Given three side of a triangle can be the sides of a right angled triangle or not?
2.5 cm, 6.5 cm, 6cm
In case of right angled triangle, identify the right angle.
Let us consider, the larger side be the hypotenuse and also using Pythagoras theorem,
(Hypotenuse)2=(Base)2+(Perpendicular)2
2.5 cm, 6.5 cm, 6cm
In ΔABC,(AC)2=(AB)2+(BC)2
L.H.S.=(6.5)2=42.25cm
R.H.S.=(6)2+(2.5)2=36+6.25=42.25cm
Since, L.H.S. = R.H.S.
Therefore, the given sides are of the right angled triangle.
Right angle lies on the opposite to the greater side 6.5 cm, i.e., at B.