Wednesday, November 17, 2010

Chapter 3

Vocabulary

Transversal=a line that intersects to coplanar lines at 2 different points
Corresponding angles=Angle that are on the same side as the transversal
Alternate interior angles=angles that are on different sides of the transveral, but are in between the 2 other lines
Alternate exterior angles=Angles that are on different sides of the transversal and are on the opposite sides of the 2 other lines
Same side interior angles= Angles that are on teh same side of the transversal and on teh inside of the 2 other lines


 ----------
  ----------     = Parallel Lines

  |________    = Perpendicular Lines
  |


Proving Lines are Parallel

1.Converse of the alternate interior angles
2.Converse of the alternate exterior angles
3.Converse of the same-side interior angles
4.Converse of the corresponding angles
5.If 2 lines are perpendicular to the same line the they must be parallel         ----------- ^


Finding the Slope

Equation:    y1-y2  =  once you find the answer you divide the top number by the bottom and thast the slope.
                 x1-x2 
    


                5-3 = 2 = 1
                                                                                                 4-2    2

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