Respuesta :

because both triangles share segment AC, the reflexive property of equality states that AC = AC. therefore, they are congruent by ASA: B

The theorem that can be used to prove that ΔABC and ΔCDA are congruent is: B. ASA

What is the ASA Congruence Theorem?

The Angle-Side-Angle Congruence Theorem (ASA), is a triangle theorem that proves that two triangles having two pairs of congruent angles and a pair of equal sides are congruent to each other.

Thus,  ΔABC and ΔCDA have:

  • One pair of congruent sides - AC ≅ AC (reflexive property)
  • Two pairs of congruent angles - ∠DAC ≅ ∠BCA and ∠BAC ≅ ∠DCA

Therefore, the theorem that can be used to prove that ΔABC and ΔCDA are congruent is: B. ASA

Learn more about ASA Theorem on:

https://brainly.com/question/82493

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