What proof does president reagan provide in his speech of the failure of communism and the success of democracy?

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.

music

explanation:

6 units. ab and lo are congruent sides, and if ab= 6 units, then lo would be the same.