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Copy the pattern below.

Figure 1

Figure 2

Figure 3

Figure 4

  1. Draw the fifth and sixth figures on your paper.

    For each figure, vertical dot is added and horizontal dots are added.

  2. Describe Figure .

    How would you describe Figure 1? Figure 2?
    Find a pattern so that you can imagine how Figure 20
    will look, and then describe it in the same way you would Figures 1 and 2.

    vertical dots and horizontal dots

  3. How many dots will be in Figure 20?

    The total number of dots in Figure 20 will be the sum of the vertical dots and the horizontal dots minus one (so that you do not count the corner dot twice).
    Use your answer from part (b) to help you solve this problem.