Please help!

I have a problem. In section 2 lecture 28 at 10:00, when you add the face/ramp to the pyramid, mine is outside while the instructor’s in inside the pyramid. In the next lecture when I try to use circle select to delete the edges that cover the ramp, I can’t seem to select those edges properly. Please help!
This is a picture of what my pyramid is like:

Never mind, I solved it. I just had to place the ramp on the correct vertices.