  We characterize the existence of certain geometric configurations in the
fractal percolation limit set $A$ in terms of the almost sure dimension of $A$.
Some examples of the configurations we study are: homothetic copies of finite
sets, angles, distances, and volumes of simplices. In the spirit of relative
Szemer\'{e}di theorems for random discrete sets, we also consider the
corresponding problem for sets of positive $\nu$-measure, where $\nu$ is the
natural measure on $A$. In both cases we identify the dimension threshold for
each class of configurations. These results are obtained by investigating the
intersections of the products of $m$ independent realizations of $A$ with
transversal planes and, more generally, algebraic varieties, and extend some
well known features of independent percolation on trees to a setting with
long-range dependencies.
