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3-22.

Refer to ∆ABC at right. Determine if each triangle below is congruent to , similar but not congruent to , or neither. Justify each answer. If you decide that they are congruent, organize your reasoning into a flowchart.

  1. Find the missing angles using the Triangle Angle Sum Theorem.

    Similar because of , but not congruent. Why?

  1. Not similar and not congruent because there are no corresponding congruent angles between the triangles.