[size=150]When  doing coordinate geometry we will need the coordinates of points and/or a coordinate plane.[br] The things you will learn to do: [br]  1.   Determine the distance between two points [br]    a.  for two points that lie on a horizontal line* [br] b.  for two points that lie on a vertical line* [br] c.  for two points that lie on an oblique line*[br]    [br]    *note: The line does not necessarily need to be drawn in. [br] [br] 2.  Determine the length of a segment  [br] You will do the same as you did in determining the distance between two points because we use the coordinates of the segment's endpoints.[br][br] 3. Use  the distance formula[br][br] 4.  Calculate the coordinates for the midpoint of a segment.[br]    a. calculate the coordinates of a segment's endpoint from its midpoint's and the other endpoint's coordinates.[br][br] 5. Calculate the slope of lines and segments. [br] a.  use the slope to determine if lines are: [br] 1.  parallel or[br] 2.  perpendic[/size]ular[br][br] [size=150]6. Apply your facts in order to:[br]    a. calculate the perimeter of a figure.[br]    b. calculate the area of a figure.[br]    c. prove/verify relationships.[/size]