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Given c//d and measure of angle 1 if congruent to measure of angle 3. Show that lines a//b. (Ex. 2)

Previous video in this series on YouTube: https://youtu.be/1PAQYJAPSUQ
Title: Geometry - Ch. 4: Lines and Angles (34 of TBD) Parallel Lines and Interior / Exterior Angles Ex. 1

Next video in this series on YouTube: https://youtu.be/mFBfxH4r3CU
Title: Geometry - Ch. 4: Lines and Angles (36 of TBD) Parallel Lines and Interior / Exterior Angles Ex. 3