6.3 Prove Triangles Similar by AA Rating: (6) (3) (0) (0) (0) (3) Author: Amanda Husfeldt. See More. Try Our College Algebra Course. ... Homework Answers. Previous. Next. of Presentation Mode Download. Zoom Out. Zoom In. More Information Less Information Close Source: Holt McDougal. Rating. Poor Fair OK Good

Naturally, a similar identity holds after swapping the "rows" and "columns" in Pascal's arrangement: In every arithmetical triangle each cell is equal to the sum of all the cells of the preceding column from its row to the first, inclusive (Corollary 3).