Question

Show that the points (7,9),(3,-7),(-3,3) are vertices of right angled triange

Answer 1

Using distance formula apply for three angles two at a time and u will get two values which lenght of each side which i got is
Root of 112,root of 236,root of 124 which pythagorean triplets so it is a right angle triangle,distance formula is root (x1-x2)^2 + (y1-y2)^2