reference point creation

Hi,
I need to create an extruded cut on a surface inclined at 10 degrees
from the vertical default plane. However, I need to reference the cut
with "true" vertical dimensions (Y direction of default coordinate
system origin). My Pro/E tactic would have been to create 2 planes
offseted from the default planes and make a reference point on the
surface by choosing the two planes (vertical and horizontal distances)
and the surface on which the reference point must lie on. In
SolidWorks, I don't have the option to create a point at the
intersection of 3 planes (or surfaces). How should I proceed?
A 3D sketch let me lie a point on a surface and put true dimensions
from the default coordinate system but then I can't create the
rectangle I want on the inclined surface. With this 3D point created,
if I create a 2D sketch and try to reference the point made in the 3D
sketch, it doesn't work (Can't reference a sketch in another sketch).
What's the proper way to achieve that?
Thanks
Jean-C

 

OK I don't think I quite follow.
You want to create a plane at an angle to extrude to and you know the
location of a single point on the plane?

Offset the first plane you talked about draw a line at the height of your
other offset. You can then use this line and another plane to create a plane
through the line at an angle.

Or offset the first and second planes and create an axis at their
intersection. You can then create a point by projecting the end of the axis
to the plane you want. (sorry spoke too soon you can't project an axis onto
a plane seems silly)

Or use the 3d sketch approach you mentioned you can reference other sketches
a few different ways you can dimension from them or add relations to them or
you can convert entities from one sketch to another.

In the 3d sketch approach I try to use reference lines (Centerlines) you can
tie them to an axis and control their length with dimensions. this way you
could use 3 lines to get you to any known point in space

Regards
Corey