# Mid-point of a line segment

### From Devipedia

Our two points can also be used to find the midpoint of a line segment.

http://upload.wikimedia.org/math/d/e/e/deecdda2b6747bacf9382133e6d045f4.png

Here I modify the script slightly to find the midpoint of our line and place a blue dot on it.

from turtle import * from math import * setworldcoordinates(-15,-15,15,15) # define our points x1 = 12.0 x2 = 2.0 y1 = 8.0 y2 = 3.0 penup() goto(x1,y1) pendown() dot(10, 'red') # the first point goto(x2,y2) # draws a thin line to the second point dot(10, 'red') # the second point midX = (x1+x2)/2 midY = (y1+y2)/2 goto(midX, midY)# midpoint of the line segment dot(10, 'blue') # draw a blue dot

Okay this is important but fairly boring stuff. Moving on...