For a triangle to be right angled triangle, it muist satisfy the pythagoras theorem,
[tex]\begin{gathered} H^2=P^2+B^2 \\ 10^2=6^2+8^2 \\ 100=36+64 \\ 100=100 \\ \text{left hand side = right hand side} \end{gathered}[/tex]Hence, It is a right angle.
