Question

 In triangle ABC, if AB = 2.5cm, BC = 6cm and AC = 6.5cm, then angle B is ......​

Answer 1

Answer:

Right angled triangle

Step-by-step explanation:

According to the Pythagoras theorem,

${hypotenuse}^{2} = {perpendicular}^{2} + {base}^{2}$

therefore,

${6.5}^{2} = {2.5}^{2} + {6}^{2}$

=> 42.25 = 6.25 + 36

=> 42.25 = 42.25

[hence, it is proved that it is a right angled triangle]