Pascal's Triangle

To construct Pascal's triangle, add two consecutive numbers in one of the rows to find the number below and between those numbers. The numbers at the beginning and end of each row are always 1 (because 1+0=1). Check your work with the row controls!

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

If you look at the "shallow diagonals" of Pascal's triangle (click the "Show Fibonacci Diagonals" checkbox), the diagonals sum to the Fibonacci Numbers. Cool!

Colin Anderson, November 23, 2012, Created with GeoGebra

To build Pascal's triangle in the form that he knew it as
  1. Open an Excel file (do not type in the "" in the following.)
  2. In cell B2, type "=B1+A2"
  3. Fill as many cells as you would like to see entries of Pascal's Triangle
  4. In cell A1, type "1"
  5. Fill both Row 1 and Column A with 1s
  6. See Pascal's triangle unfold