How can you place new materials in an existing material ...

[Zoey63294]

How can you place new materials in an existing material collection?
 
  What will be an ideal response?

Question 2

When developing a truncated cone or pyramid, why is the complete solid developed first?
 
  What will be an ideal response?

[Briannahope]

Answer to Question 1

PC: In the Materials window, open the secondary selection pane. Display both the In-Model and the destination collection, and drag materials to their destination collection. Mac: From the In-Model collection, place the materials you want to save in the color wells. Then open the destination collection and move the materials from the wells into the collection.

Answer to Question 2

In order to determine the true length along the cutting plane