The sum of the three angles of every triangle always equals 180Â° . A right triangle always has one angle equal to 90Â° and two angles whose sum is 90Â° , making a total of 180Â° . A rectangle is a four sided shape. with four right angles (90Â° ).
boast 1. v. boastÂ·ed, boastÂ·ing, boasts. v. intr. To talk or write about oneself or something related to oneself in a proud or self-admiring way. v. tr.
: a reason to be proud: something impressive that someone or something has or has done. The museum's proudest boast is its collection of rare gems. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. /ËboÊstfÉl/ adjective [more boastful; most boastful].