Any gals wanna join a meet O_o

In the diagram, δgef and δhef are congruent. what is the value of x?

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation

Avast plain of rolling hills are actually folds of monoclines domes and basins anticlines and synclines horsts and grabens