Does an altitude always lie in the interior of a triangle?

Will an altitude always lie in the interior of a triangle?

Will an altitude always lie in the interior of a triangle?

Does a median always lie in the interior of the triangle ?

Find the number of points , having both co- ordinates as integers , that lie in the interior of the triangle with vertices (0,0) , (0,41),(41,0)

the number of points marked in the interior of the triangle is

A circle drawn with origin as centre passes through ((13)/(2),0) . The point which doesn't lie in the interior of the circle is .......

Find the number of points with integral coordinates that lie in the interior of the region common to the circle x^(2) + y^(2) = 16 and the parabola y^(2) = 4x.