A(6,1), B(8,2), C(9,4) are three vertices of a parallelogram ACBD. If E is midpoint of DC, find the area of ∆ADE.
Given, ACBD is parallelogram.AB and CD are the diagonal intersecting in E.
Let the coordinates of D be (x, y).
We know that, diagonals of parallelogram bisect each other.
∴ Mid point of CD = Mid point of AB
Coordinates of D = (5, 1)
Coordinates of E
Area of ΔADE