PDF chapter test TRY NOW
Show that \(D(1, -4)\), \(E(2, -3)\), and \(F(4, -7)\) vertices form a right angled triangle and check whether it satisfies the Pythagoras theorem.
The slope of \(DE\) \(=\)
The slope of \(EF\) \(=\)
The slope of \(DF\) \(=\)
\(\Delta DEF\) is .
It the Pythagoras theorem by .