Geometry help....please???

I have been trying to answer these questions for a week now! I put a link to the images so please, help me? Thanks!
1.) Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
-Name four coplanar points
-Name four non-coplanar points
-Name four collinear points
2.) Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
(Find each intersection. If no intersection, write none. Make sure to specify whether the intersection is a point, segment, plane, etc.)
-Plane GLM & LPN:
-Segment GK & LG:
-Plane HJN & Plane GKL:
-Segment KP & Plane KJN:
3.)Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
(Ray OB bisects <AOC.)
-Find the value of x (show work)
-Find <AOB
-Find <BOC
-Find <COD
-Find <AOD

Hey Diane8611.

The answers to the first ones are all just definitions. When you say a "co" it means that the things have a particular "thing" in common. So when you see "co-planar" it means that the plane they lie on is "common" to all points.

So with this hint can you guess what the other "co" terms relate to?