3.2.15 Lines On a Plane
Condition: b rhombus \ (a b c d \) the coordinates of its center \ (q \) and vertices \ (a \), as well as its area \ (s \) are given. Find the equations of the sides of the rhombus. \ [Q (8,11), \ quad a (1.4), \ quad S = 28 \ text {. } \]
Equation of A Straight Line on a Plane. Finding the Equations of Heights, Bisectors and Medians of a Triangle, The Intersection of Lines.