Figured out level 40.
40 SPOILER: Put the first block on the top circle, angle it so it fall down, it should fall onto the two circles horizontally. Now put the second block on the end of the first. They should be perpendicular, hence the level name. Then just stack the rest up; put the triangles at the end to hold up all the balls.
Thanks you so much, Gamesobsessed! Here your E-cookie! (It's bacon flavored)
Also, to edit your hint, you were supposes to put triangle between the far left circle and tower. (To catch any falling bricks) But it always necessary.
Once again thanks.
Love, Solice