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.
syn: boast, brag imply vocal self-praise or claims to superiority over others. boast usu. refers to a particular ability, possession, etc., that may justify a good deal of pride: He boasts of his ability as a singer. brag, a more informal term, usu.