[" A triangle with vertices "(4,0),(-1,-1)],[" and "(3,5)" is "a/an]

A triangle with vertices (4,0),(-1,-1),(3,5), is

A triangle with vertices (4, 0), (-1,-1), (3,5) , is

A triangle with vertices (4, 0), (-1, -1), (3, 5) is

A triangle with vertices (4, 0), (-1, -1), (3, 5) is :

A triangle with vertices (4,0),(-1,-1), (3,5) is (A) an isosceles and right angled (B) an isosceles but not right angled (C) a right angled but not isosceles (D) neither right angled nor isosceles

A triangle with vertices (4,0),(-1,-1),(3,5) show that triangle is isosceles and right angled.

Find the area of the triangle with vertices (3,8),(-4,2) and (5,1) .