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Answer:
1) ΔCBA ~ ΔCQR
2) ΔCDE ~ ΔCTS
Explanation:
In both cases, the vertical angles at C are congruent. The marking shows an additional internal angle is congruent, so the triangles are similar by the AA similarity postulate.
The vertex at C is named first, followed by the marked angle in each of the given similarity statements. The same order must be used for the vertices in the similar triangle.
1) ΔCBA ~ ΔCQR
2) ΔCDE ~ ΔCTS