### Home > CC1 > Chapter 1 > Lesson 1.2.4 > Problem 1-91

1-91.

Sketch the

and figures. What is the pattern of the first

figures? Follow this pattern in sketching Figures and See Figures 4 and 5 below.

How many dots will the

figure have? Try finding a way to describe how you add dots to the figures.

How many dots did you start with? How many do you add each time?

Use the eTool below to create the figures.

Click the link at right for the full version of the eTool: *1-91 HW eTool*