Terminologies used in Tree
According to the above example image of a tree
- Nodes: A B C D E F G H I J K L M N O P
- Root: A
- Internal Nodes: A B C D E F H I J
- External nodes: K L M N O P
- (Parent , Child) : (A, B and C), (B, D and E), (C, G and F),(H, K and L), (I, M and N) , (J, O AND P).
- Siblings : (B,C) , (D, E), (G, F), (K, L), (M, N) ,(O, P)