What forms as a result of collisions and separations between tectonic plates?

Ms. ringer asked her class "what are the favorite colors of the students in our school" which student correctly deceives ms. ringer's question

Which search pattern would be best suited for a crime scene where many investigators are available to search a large area? a. spiral b. grid c. line d. zone

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