### Home > CC1 > Chapter 2 > Lesson 2.1.1 > Problem 2-9

2-9.

Lulu is playing “Toothpicks and Tiles”. She has arranged

tile | tile | tile | tile | tile | tile | tile | tile | tile | tile |

Use the eTool below to create an arrangement of tiles.

Click on the link at right for the full eTool version: *2-9 HW eTool*