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Geometry Ch10.4 Sett III #4

Kerry Asked:
In Chp. 10, Lesson 4, Set III Question 4 the textbook asks “Why is QD/AC = DB/CD?”
Shouldn’t it be DB/CB instead of DB/CD?
Dr. Callahan Answered:
Again you are correct. This is an error in the new printing of the 3rd edition by My Father’s World.