http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines
9.Given:^62 ∼=^63 Prove:^61 ∼=^64In 10-15, use the given information to determine which lines are parallel. If there are none, writenone. Consider
each question individually.
10.^6 LCD∼=^6 CJI
11.^6 BCE and^6 BAFare supplementary
12.^6 F GH∼=^6 EIJ
13.^6 BF H∼=^6 CEI
14.^6 LBA∼=^6 IHK
15.^6 ABG∼=^6 BGH
In 16-22, find the measure of the lettered angles below.