Opposite sides of a parallelogram are congruent and parallel.
Since the vertex C is b units long from y-axis, the x-coordinate of E is b.
\Since the vertex G is
units long from x-axis, the y-coordinate of E is
.
The coordinates of E are
.
Since the vertex G is
units long from y-axis, the x-coordinate of A is
.
Since the vertex C is b units long from x-axis, the y-coordinate of A is b.
\The coordinats of A are
.
The coordinats of A are
.
The coordinates of E are
.