DISTANCE BETWEEN
TWO POINTS
Done by : Darrel Chua (03)
Sean Heng (06)
VIDEO FOR
UNDERSTANDING
CONVENTIONAL WAY

We would measure the length then scale the length
 Use a ruler!!
THE FORMULA
WHY?
 The formula, derived from the Pythagoras theorem states that
square a and square b, add them together, and square root them, you
get the length of c, hypotenuse.
1.1
(CONTINUED…)
In this case we have a red line. The rise is shown by the line marked y,
and the run is marked by the line x. This corresponds to the lines a
and b from the previous picture (1.1). Now, we have the red slanted
line, which corresponds to the hypotenuse c in the previous
picture(1.1).
1.2
RUN/RISE
TO FIND DISTANCE…
 First, we square the run, which is x2 − x1 
. Then we square the rise,
which is y2 − y1,
. We then add these two values together. We should get this:
(x2 − x1)squared +( y2 − y1)squared
As we have seen, the two values are equal to the hypotenuse squared.

Therefore we have to square root the equation to get the final product:
IS THERE SUCH A THING AS FINDING THE
D IS TA N CE OF A L IN E? ( V ER S US, FIN D IN G
THE DISTANCE OF A LINE SEGMENT).
There is no such thing as finding the distance of a line. A "line" is actually
considered to be abstract. This is because the "line" is considered to be
infinite and continuous in both directions. It is impossible to measure an
infinite distance. However, it is possible to find the distance of a line
segment. This is because a line segment is actually the distance between two
points of the infinite line.
COMIC!!
SOURCE
 http://www.icoachmath.com/SiteMap/Run.html
 http://www.1728.com/distance.htm
 http://www.stripgenerator.com
 http://www.youtube.com
 http://www.purplemath.com/modules/distform.htm
 Slide 5,6,8 info from Timothy and Liang Hao
 http://www.online-convert.com/result/b5f4dae17d8e42b46297a28de71f1d73