Image by Derrick Coetzee, from Wikipedia entry 'Binary tree'

$1.$ For the given tree, what is the root node?

$2.$ Interior nodes?

$3.$ Leaf nodes?

$4.$ Node E$\text{'}$s parent?

$5.$ Node E$\text{'}$s children?

$6.$ Node E$\text{'}$s ancestors?

$7.$ Node E$\text{'}$s descendants?

$8.$ Node E$\text{'}$s left subtree?

$9.$ Node E$\text{'}$s right subtree?

$10.$ Node E$\text{'}$s depth?

$11.$ The height of the tree?

$12.$ Is this a binary tree? Give the reason to your answer. Is this a binary search tree? Give the reason to your answer.

$13.$ Is this a balanced binary tree? Give the reason to your answer.

$14.$ For the given tree, what is the preorder traversal?

$15.$ Inorder traversal?

$16.$ Postorder traversal?