It seems the file you uploaded contains a geometry problem in Vietnamese. Here's what the question asks:

Problem:

1. Determine the projection of the pyramid on the plane.
2. Calculate the angle between the line and the plane.

If you'd like help solving these, could you clarify a bit more about the pyramid or provide any specific geometric details such as coordinates, the dimensions of the pyramid, or any other relevant information from the problem?

Let me know how you'd like to proceed!