Question

Following the co-ordinates of the three vertices of a rectangle $ABCD$ are given. By plotting the given points; find the co-ordinates of the fourth vertex:

$B(10,4),C(0,4)$ and $D(0,-2)$.

Answer 1

Firstly, plot $B(10,4),C(0,4)$ and $D(0,-2)$ on the graph.

Since $ABCD$ is a rectangle, the abscissa of $A$ will be that of $B$ and the ordinate of $A$ will be that of $D.$

According to the graph $A(10,-2)$.