Answer:
B. The lines AB and BC are perpendicular.
Step-by-step explanation:
If all the points are doubled on the x-axis, they are perpendicular.
hope this helps.
Answer:
1. always
2. sometimes
Step-by-step explanation:
Two lines are coplanar if they lie in the same plane or in parallel planes. There is ALWAYS a plane which contains two parallel lines (see first attached image for details).
Two lines that lie in parallel planes are sometimes parallel. For example, see at second image. Planes 
and 
are parallel. Consider pair of lines 
and 
- they are parallel, but if you consider the pair of lines and 
, you can see they are not parallel.
.55 is the answer. I hope this helped a great deal!
Answer:
<h2>
If two angles measures 180 degrees, then they form a linear pair.</h2>
Step-by-step explanation:
The conditional statement should be this way, because after the word ''if'', should be placed the condition, and after the word ''then'', should be the consequence.
Sorry don’t now the answer to this problem
