9-2-2014  HOPE YOU HAD A GREAT HOLIDAY  PLEASE PICK UP NOTES ON BACK SHELF  PLEASE TURN IN YOUR INITIAL HW TO THE TRAY.

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Presentation transcript:

 HOPE YOU HAD A GREAT HOLIDAY  PLEASE PICK UP NOTES ON BACK SHELF  PLEASE TURN IN YOUR INITIAL HW TO THE TRAY.

DISTANCE AND LENGTH DAY 1- VOCABULARY AND INTRO TO SEGMENT ADDITION POSTULATE.

LEARNING GOALS  Be able to identify and label parallel and perpendicular lines.  Be able to identify and label line segments, rays and opposite rays.  Know the definition of midpoint / bisector  Use basic operations with the Segment Addition Postulate.

PARALLEL LINES  Two coplanar lines that never intersect.  How can we name these parallel lines?

PERPENDICULAR LINES  Two lines that intersect to form right angles (90 Degrees)  Can you name a set of perpendicular lines?

LINE SEGMENT  Portion of a line with 2 endpoints  Named by the 2 endpoints with a line on top

RAY -  Ray – portion of a line with one end point and extends forever in the other direction.  Opposite rays- 2 rays when put together form a straight line. They share a common endpoint.

MIDPOINT / BISECTOR  Midpoint- A point on a line segment that divides the segment perfectly in half.  Bisector – a line that cuts another line in half, it goes through the midpoint.

AB VS. AB  What is the difference between the two names above?  First – AB simply states two points A and B  The second is labeling a line segment with endpoints A and B.

EXAMPLES  Name 2 sets of parallel lines  Name 2 sets of perpendicular lines.  Name 4 line segments.  Name 4 rays.  Name a set of opposite rays.

SEGMENT ADDITION POSTULATE

EXAMPLES

SUMMARY  In the SUMMARY SECTION  Please summarize todays notes and think of any questions you may have while I pass out the assignment.  HW is will be graded in class tomorrow.

WHAT YOU SHOULD KNOW…..  How to identify and name  parallel and perpendicular lines  Line segments, rays, opposite rays  The definition of midpoint / bisector.  Basic operation of the SEGMENT ADDITION POSTULATE.