CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 8. Right Triangle Trigonometry

16.

17.

18.

19.

20. Write a proof for Theorem 8-5.

Given: 4 ABDwithAC⊥DBand^6 DABis a right angle.Prove: 4 ABD∼4CBA∼4CAD

21. Fill in the blanks for the proof of Theorem 8-7.

Given: 4 ABDwithAC⊥DBand^6 DABis a right angle.Prove:BCAB=ABDB

TABLE8.3:

Statement Reason

1. 4 ABDwithAC⊥DBand^6 DABis a right angle.


2. 4 ABD∼4CBA∼4CAD
   3.BCAB=DBAB
   22. Last year Poorva’s rent increased by 5% and this year her landlord wanted to raise her rent by 7.5%. What is
   the average rate at which her landlord has raised her rent over the course of these two years?