Noob question: how is the thinking logic of "cut planes" in Inventor? Plz see examples...

Hi to all here ,especially to those ones working in Inventor. Ok straight to the point on how to do (in Inventor) the sketches no. 3 , 5, 6, and 18 for example of the enclosed attachment.
These are VERY BANAL sketchs : i've tryed using working planes,working axes and point and I'm not able to achieve the given examples.My need is to understand how to cut a solid with a plane "passing through it" in a given point ,edge or surface. Hope you understand the BASIC concept I'm trying to learn...
Thank you very much for some clues on how I can achieve that and sorry if it's too simple,but for one new to a CAD system it could be a very daunting task.
Claudio

2 Answers

Thank you very much Jonathan for your feedback! Very appreciated!

Hi Jonathan! I've tryed both but essentially I start with a 2D sketch making the consequent extrusion and build the next solid and so on...But where I struggle most is to understand HOW I cut a solid with a "plane cut" in a given angle as if I were a "Ninja with a katana"...lol