You can use the distance formula: http://www.teacherschoice.com.au/maths_library/analytical%20geometry/alg_15.htm
(this might help).
ruler
If you know the end points then use the distance formula or simply use a ruler.
True
yes
15
how do you find distance between points
Yes
Since they are the same point, the distance between them is 0.
True
The time and distance between two reference points, then compute the average speed.
8.54
The 3-D distance formula depends upon what the two points are that you are trying to find the distance between. In order to find the formula, you need to enter 2 sets of coordinates in the 3 dimensional Cartesian coordinate system, and then calculate the distance between the points.
0 0
Horizontal
The sq.root of 122+162=20
Add the x-coordinates of the points and take the absolute value
Yes it is true