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.
Synonyms. 1  It was time to forget about pride and my proud boast of being âalways wellâ. 2  That is not an idle boast, for the network is alive night and day with the thundering rattle of powerful locomotives and the incessant clanking of machinery in repair depots and marshalling yards.