Respuesta :

Using the bottom rules, we can conclude that Ethan's mistakes are: shapes C and F are placed in the wrong groups.

How to spot mistakes?

The image showing the two groups is as shown in the brainly link attached at the end.

From the attached file in the brainly link, we see that the shapes are grouped using the following criteria:

  • All the shapes in group 1 have 4 square corners.
  • All the shapes in group 2 have exactly 1 square corner.

Using the above rules, we can conclude that Ethan's mistakes are: shapes C and F are placed in the wrong groups.

Read more about spotting mistakes at; https://brainly.com/question/27653787

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