Your audience should be a part of your presentation. select the best answer from the choices provided t f

when parallel rays of light pass through a concave lens, the refracted rays diverge so that they appear to come from one point called the principal focus.

a dictionary contains alphabetical list of words that include the meaning, etymology and pronunciation while the thesaurus is a book that contains synonyms and even antonyms.

a dictionary explains the meaning of a word and shows how it is spelled and used. a thesaurus is a book that contains words that can be used in the place of another. unlike the dictionary the words in a thesaurus are arranged either alphabetically or thematically.