Answer:
Part A: {T,O,N}, {O,N,E}, {N,E,T}.
Part B: {TO,ON}, {ON,NE}, {NE,ET}.
Part C: {TO,NE}, {ON,ET}.
Part D: {∠T, ∠O}, {∠O, ∠N}, {∠N, ∠E}.
Part E: {∠T, ∠N}, and {∠O, ∠E}.
Part F: TN and OE.
Step-by-step explanation:
Considering the quadrilateral TONE,
Part A: Name of three sets of consecutive vertices are {T,O,N}, {O,N,E}, {N,E,T}.
Part B: Name of three sets of consecutive sides are {TO,ON}, {ON,NE}, {NE,ET}.
Part C: Name of two sets of opposite sides are {TO,NE}, {ON,ET}.
Part D: Name of three sets of adjacent angles are {∠T, ∠O}, {∠O, ∠N}, {∠N, ∠E}.
Part E: Name of two sets of opposite angles are {∠T, ∠N}, and {∠O, ∠E}.
Part F: Name of two diagonals are TN and OE. (Answer)