In an obtuse triangle the orthocentre lies outside the triangle.

In a right triangle the length of the hypotenuse and one side are $10 \mathrm{cm}$ and $8 \mathrm{cm}$. The length of the third side will be _____.

In$∆\mathrm{ABC}, \mathrm{AB} > \mathrm{AC}$ then  $\angle \mathrm{C}$ _____ $\angle \mathrm{B}$ . $(>, <, =)$