1. BY: Joseph A. Tudda III

2.  Two or more lines that never touch and stay the same distance apart.

3.  Perpendicular lines consist of at least two intersecting to form 90° angles.

4.  The midpoint is a point on a line or in a set of points that is the center.  On a line the midpoint is the middle  If given two points you can use the midpoint formula to find the midpoint.

5.  Ex  To find Distance the formula above can be used.  The Distance Formula is used to find the distance between two given points  Distance can help find if two triangles or figures are congruent

6.  Find the distance of point A and B.

7.  First know what points you are using.

8.  Find the distance of point A and B.  First know what points you are using.  Second Plug into formula.

9.  Find the distance of point A and B.  First know what points you are using.  Second Plug into formula.  Then Solve for anwser.

10.  Is point c a midpoint?  Are line ACB and Line L parallel?  Are line L and line K Perpendicular? A CB

11.  Is point c a midpoint? ◦ - Yes ◦ This symbol means the parts of the line are congruent and have C in common.  Are line ACB and Line L parallel?  Are line L and line K Perpendicular? A CB

12.  Is point c a midpoint? ◦ - Yes  Are line ACB and Line L parallel? ◦ -Yes ◦ - This symbol shows that they are parallel.  Are line L and line K Perpendicular? A CB

13.  Is point c a midpoint? ◦ - Yes  Are line ACB and Line L parallel? ◦ -Yes  Are line L and line K Perpendicular? ◦ - No ◦ - They are not at a 90° angle. A CB

14.  What is the distance between these two lines?

15.  First find the slope of both lines.

16.  What is the distance between these two lines?  First find the slope of both lines.  Next find a point in common using a Perpendicular slope.

17.  What is the distance between these two lines?  First find the slope of both lines.  Next find a point in common using a Perpendicular slope.  Last plug in to distance formula.

18.  Find the distance.

19.  (6-(-4))^2+(5-2)^2  10^2+3^2  100+9  109

20.  What is the midpoint?

21.  7-10 =-3/2  5-14 =-9/2  (, )

22.  www.khanacademy.org www.khanacademy.org  www.mathsisfun.com www.mathsisfun.com  http://www.statisticslectures.com/topics/mid pointformula/ http://www.statisticslectures.com/topics/mid pointformula/  http://jwilson.coe.uga.edu/EMAT6680Su12/ Carreras/HW_10/HW_10.html http://jwilson.coe.uga.edu/EMAT6680Su12/ Carreras/HW_10/HW_10.html