My teacher told me that the only thing we can believe in geometry was that straight lines are straight. I don't think I've used lines that aren't straight...at least yet. So, can I believe that all lines are 180 angles?
2007-10-10 08:45:27 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Yes, if the line is straight.
.
2007-10-10 08:47:35 · answer #1 · answered by Robert L 7 · 0⤊ 0⤋
yes, because if a line is straight like on a graph or a diameter of a circle it is 180 degrees. Everyone knows that a circle is 360, just like if some one were to spin completely around on a skateboard it is doing a 360. well a straight line can be drawn through the center of a circle, better known as the diamerter. if you divide 360 by 2:
360/2=180 the straight line through a circle just like all straight lines are 180 degrees.
2007-10-10 15:55:58 · answer #2 · answered by cb 1 · 0⤊ 0⤋
All straight lines are straight angles.
An arc of a circle is not a straight line and is thus not a straight angle.
You can believe many other things as well because you will prove them to be true.
2007-10-10 15:52:11 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
Technically, a line is a straight angle at 180 degrees. That means that it is flat, and doesn't variate at any point. So yes, all lines are 180 degrees as long as they don't variate at all.
2007-10-10 15:49:48 · answer #4 · answered by Anonyomous 2 · 0⤊ 0⤋
That depends IF the line is straight or not. If you've got a bent line then I'll put money on the fact that it's not 180 degrees.
2007-10-10 15:49:34 · answer #5 · answered by dunno 1 · 0⤊ 0⤋
yes, always straight line are 180 degrees.
2007-10-10 15:48:09 · answer #6 · answered by ib 4 · 0⤊ 0⤋
yes if the line is straight
2007-10-10 15:48:44 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Yes
2007-10-10 15:47:52 · answer #8 · answered by Arin 3 · 0⤊ 0⤋
Yes if u used a ruler.
2007-10-10 15:48:07 · answer #9 · answered by the_Angry_mob 2 · 0⤊ 0⤋
Not wavy lines :-)
2007-10-10 15:48:01 · answer #10 · answered by Anonymous · 0⤊ 1⤋