Question 103757
<pre><font size = 5 color = "indigo" face = "times new roman"><b>
The points (1,5), (4,5) and (1,0) represent three 
corners of a rectangle.  Find the coordinates of the
fourth point.

Draw a graph, plot the three points, and connect them:

{{{drawing(400,400,-10,10,-10,10,

graph(400,400,-10,10,-10,10),

line(1,5,4,5), line(1,0,1,5) )}}}

So now we finish the rectangle by
drawing in the right and bottom sides:

{{{drawing(400,400,-10,10,-10,10,

graph(400,400,-10,10,-10,10),

line(1,5,4,5), line(1,0,1,5), line(1,0,4,0), line(4,0,4,5)   )}}}

So we can see that the bottom right-hand corner
of the rectangle is the point (4,0).

Edwin</pre></font></b>