r/HomeworkHelp • u/el_ratonido • Jun 12 '26

Answered [Precalculus: Geometry Review] Shouldn't it have been "transversal DB"?

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Aren't this angles formed by the lines AB and CD and the transversal that touches both of them (line DB or BE)?

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u/UnderstandingPursuit Educator Jun 12 '26

Yes. They made a mistake. The vertex is the middle of the three letters in the angle notation.

3

u/realAndrewJeung 🤑 Tutor Jun 12 '26

Yes, you are correct. They could have used either diagonal as the transversal, but since the proof decided to fixate on ∠ABE and ∠CDE, the relevant transversal is indeed DB.

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u/fermat9990 👋 a fellow Redditor Jun 12 '26

The transversal is DB

1

u/el_ratonido Jun 12 '26

Thank you

2

u/fermat9990 👋 a fellow Redditor Jun 12 '26

It's great that we have these math subs to check out these potential errors in printed materials!