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3-22.

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

a.

Find the missing angles using the Triangle Angle Sum Theorem.

Similar because of AA~, but not congruent. Why?

b.

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

c.