Question

Can anybody tell me all Formulae of Co-ordinate geometry?

Answer 1

under root x 2 - X 1 the whole square

Answer 2

ratio in x = mx2 + nx1 / m+n

ratio in y = mx2 +nx1 / m+ n

middle value of x line seg. = x1 + x2 / 2

middle value of y = y1 + y2 / 2

area of triangle = 1/2 underoot x1 (y2 -y3)+ x2 (y3-y1) + x3 (y1-y2)

to find the collinear points =
x1(y2,-y3) + x2 (y3-y1) + x3(y1-y2) always equal to 0

to find the length of sengment having two points ===

underoot (x2-x1)^2+ (y2-y1)^2

HOPE HELPS YOU