Question 861854
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
<img src='http://img585.imageshack.us/img585/479/rectangle.png' border='0'/></a>
If it were me, I would begin with a picture of a rectangle
and use the concept of 'sweeping' from one side to the other with a broom w wide
How much "Area" have You swept...{{{w*l}}}units^2
Triangle then becomes 1/2 the area of a Rectangle with a similar base and height.
<img src='http://img163.imageshack.us/img163/7928/trianglecw.png' border='0'/></a>