anonymous
  • anonymous
Geometry confusing me.. I'm having troubles deteriming lines / line segment / rays when it's on a shape. It's very easy for me to determine them on seperate though.. http://i.imgur.com/hkHVxFJ.png (The black paint brush is my drawing) From my eyes, i see 3 line segments because the points connected makes a line segment, can someone explain this to me? I'm surprised im the only one who thinks this way :S
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
You are not alone in your confusion. I taught geometry for many years and the distinction between the 3 was always tricky, because they are all three connected!
anonymous
  • anonymous
|dw:1440036020619:dw|
anonymous
  • anonymous
|dw:1440036091703:dw|

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anonymous
  • anonymous
|dw:1440036173819:dw|
anonymous
  • anonymous
im confused about the top 2, and it gets much more complciated once drawn onto a plane and interescting with other lines.. How do you define a line then in writing? Can a line also be a line segment? Because the top two drawings look exactly the same |dw:1440036283174:dw|
anonymous
  • anonymous
|dw:1440036376849:dw|
anonymous
  • anonymous
Lines extend without end in opposite directions. A line segment is just a small part of a line...it has a start and a stop.
anonymous
  • anonymous
yeah, but in the picture can't a line and line segment be determined by that picture? It looks the same
anonymous
  • anonymous
ok, so going back to the pictures you posted, they want you to identify the green dotted line?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
ok so picture 1 shows a clear start and then it extends forever in 1 direction only. Do you know what that's called?
anonymous
  • anonymous
Yes, a ray. Thought it has two points, does that means theres 2 rays?
anonymous
  • anonymous
nope only one. Just because there are 2 points doesn't mean it stops after the 2nd point. You'll notice there's an arrow that tells you it keeps going in that direction.
anonymous
  • anonymous
I take that back...technically there could be 2 rays, but they both go in the same direction.
anonymous
  • anonymous
yeah, that's what i meant.
anonymous
  • anonymous
it's still a ray though
anonymous
  • anonymous
im still having troubles understanding the top two pictures u drew me, looking back at the orginal picture, it is easier to understand.
anonymous
  • anonymous
ok, so I drew a line in the top picture. Lines are straight paths that extend forever in opposite directions, so if you have a straight path with an arrow at each end, it's a line.
anonymous
  • anonymous
Lines are named for any 2 points on the line.
anonymous
  • anonymous
so wouldn't the second picture be a line as well?
anonymous
  • anonymous
your second picture or mine?
anonymous
  • anonymous
yours
anonymous
  • anonymous
technically yes it could be. What I was trying to show you is that a line segment is just a part of a bigger line...it's in the name line segment=line piece :)
anonymous
  • anonymous
what makes a line segment different from a line is that it has a clear start and a clear stop.
anonymous
  • anonymous
I hope I haven't confused you even more! Teaching online is way harder than teaching in person.
anonymous
  • anonymous
could you show me some more examples of a line segment?
anonymous
  • anonymous
could you show an example with 3 points on a line?
anonymous
  • anonymous
|dw:1440037180097:dw|
anonymous
  • anonymous
This has 3 line segments....from A to B is a line segment, B to C is a line segment, and A to C is a line segment. If I had added arrows, it could also be a line.
anonymous
  • anonymous
would AB define the line? Does it matter how far the points are?
anonymous
  • anonymous
if there were arrows on each end, the line could go by any of the following names: line AB, line BC, or line AC....you can always flip the letters for lines and line segments as well. so line AB and line BA are the same line.
anonymous
  • anonymous
Thanks!

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