3.3. Proving Lines Parallel http://www.ck12.org
16.m^61
17.m^62
18.m^63
19.m^64
20.m^65
21.m^66
22.m^67For 23-27, what doesxhave to measure to make the lines parallel?
23.m^63 = ( 3 x+ 25 )◦andm^65 = ( 4 x− 55 )◦
24.m^62 = ( 8 x)◦andm^67 = ( 11 x− 36 )◦
25.m^61 = ( 6 x− 5 )◦andm^65 = ( 5 x+ 7 )◦
26.m^64 = ( 3 x− 7 )◦andm^67 = ( 5 x− 21 )◦
27.m^61 = ( 9 x)◦andm^66 = ( 37 x)◦
28.ConstructionDraw a straight line. Construct a line perpendicular to this line through a point on the line. Now,
construct a perpendicular line to this new line. What can you conclude about the original line and this final
line?- How could you prove your conjecture from problem 28?
- What is wrong in the following diagram, given thatj||k?