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Home > CAAC > Chapter 10 > Lesson 10.4.2 > Problem 10-137

10-137.

Make a table with the first column as the figure number and the second column as the number of tiles in the figure.

Rule: x2 + 2x − 1

There are 34 tiles in figure 5.
Each figure has a square of the figure number + the figure number + one less than the figure number.
There are other possible patterns.