# Math help needed: what is the justification for the fourth step (chat me for options)

Anonymous
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### Question Description

ipesuni
School: UT Austin

We have

AB=CD(given)---->Side

angle BAC= angle DAC------>Angle

AC=CA ---------->Side

Thus triangle ABC is congruent to triangle CDA

Reason:-(4)

It is the SAS congruency theorem .

---Thanks------

:)

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Anonymous
awesome work thanks

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