Soo the girl that "hack. ed me" WE GOT THE REVENG

With #! i’ve tried to figure it out but i can’t.

What value of x will make the triangles similar by the sss similarity theorem?

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex