| A | B |
|---|
| biannual | happening twice a year |
| decimeter | one-tenth of a meter |
| duet | a group of two (musicians) |
| monogram | a design composed on one initial |
| November | 9th month (of original Roman calendar) |
| pentagon | a five-sided figure |
| quarter | one-fourth of a dollar |
| quintuplets | a group of five offspring born in a single birth |
| trilogy | a study of three dramatic or literary works |
| unique | only one of its kind; extraordinary |
| September | seventh month of the Roman calendar |
| pentadactyl | an animal with five fingers or toes |
| unicycle | a one-wheeled vehicle |
| triad | a group of three |
| quadruplets | four children born at the same time |
| binoculars | something with two lenses to aid in seeing |
| hexagon | a six-sided figure |
| decathlon | an event in track and field consisting of 10 parts (events) |
| quintuplets | five children born at the same time |
| duel | a fight concerning two people |
| bifurcate | to divide into two branches or parts |
| pentathlon | an athletic contest consisting of five events |
| nonagon | a nine-sided figure |
| unilateral | of, relating to, involving, or affecting only one side |
| quadrangle | a rectangular area bordered on all four sides by buildings |
| bicentennial | a period of two hundred years |
| sextuplets | six babies born at a single birth |
| octogenarian | a person between the ages of 80 and 89 |
| decimal | based on the number 10 |
| tripartite | divided into three parts |
