Review question

# Can we find a rectangle from two vertices and a diagonal? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R5967

## Interactive diagram

The points $A(1,2)$ and $B(-2,1)$ are two vertices of a rectangle $ABCD$. The diagonal $CA$ produced passes through the point $(2,9)$. Calculate the coordinates of the vertices $C$ and $D$.

In this applet, $A$ and $B$ are fixed. You can move $C$.