Question 1109389
these polygons are similar solve for x
 
<pre>

                          |  \                              / |
                         y|   \  100                       /  |
                          |    \                          /   |
                          |     \                       /     |x
                          |      \                     /      |
                          |        \                 /        |
                       20 |\40   /|  \              /         |
                          | \   / |30 \           /           |
                          |__\/___|___________________________|
                              z               69               
</pre>
       
Not clear.