| A | B |
|---|
| area | the amount of space that a figure cover |
| perimeter | the distance around a figure |
| line of symmetry | the line on which a figure can be folded so that the two halves match exactly |
| dictionary | a book which contains definitions and pronunciations |
| thesaurus | a book that contains synonyms and sometimes antonyms |
| glossary | A list of often difficult or specialized words with their definitions, often placed at the back of a book. |
| index | An alphabetized list of names, places, and subjects treated in a printed work, giving the page or pages on which each item is mentioned |
| table of contents | a list of divisions (chapters or articles) and the pages on which they start |
| encyclopedia | contains information on subjects |
| internet | carries various information resources and services |
