Question

(c) problem 15: from this given statement, select the definition, property, postulate, or theorem that justifies the prove statement. given: △apd≅△cpd prove: ∠adp≅∠cdp

Explanation:

Since $\triangle APD\cong\triangle CPD$, the corresponding angles $\angle ADP$ and $\angle CDP$ are congruent by the CPCTC property.

Answer:

Corresponding - parts of congruent triangles are congruent (CPCTC).