Preliminaries For example,Eis at depth 1 and height 2;Dis at depth 1 and height 1;the height of the tree is 3. A B D E G H I J KPreliminaries ◼ For example, E is at depth 1 and height 2; D is at depth 1 and height 1; the height of the tree is 3. A B C D E F G H I J K L