No Warm up: Please sit with your lab partner and grab a tissue box lab paper (1 per group)

Pull out your hwk and check answers Hwk answers p : 1-15 odd, 16, 23, 38 1.)RS, RT, RW, ST, SW, TW 3.) a.) TS, TR, TW b.) SR, ST 5.) BC 7.) DE, EF, BE 9.) BC, EF 11.) BC and DEF (varied answers) 13.) CD, AB,… 15.) AF 16.) True 23.) False, they are ll 38.) “Skew lines cannot be contained in one plane, therefore they have “escaped” a plane.” *Extra credit opportunity: Bring in a box of tissues or write a one page article about math in the real world.”

LEQ: How do you determine relationships between the lengths of segments?

What can you do with the numbers -3 and -7 to get 4? Postulate 1-5 aka the RULER POSTULATE: the distance between any two points is the absolute value of their difference. The length of segment AB= la-bl = AB *To show distance between two letters (A and B), you can write: AB= or m AB =

You can think of pay scales as a number line. What is the difference between a nurses and mcD’s ANNUAL salaries? a.) automechanic and xerox technicianb.) Hoss’s and carp. specialist Neonatal Nurse ($23/hr) Xerox Technician ($20/hr) Automechanic ($18/hr) Carpeting Specialist ($15.35/hr) Hoss’s ($8.35/hr) McD’s ($7.35/hr) Hershey Park ($5.85/hr) Pay SalariesNumber Line

Warm up: What is wrong with the statement below? AW 10 yd. AW=10 yd.

Congruent Segments are segments that are the same length. The midpoint of a segment is the point that divides that segment in half.

What is the midpoint of a football field?

Distance from A to B: = AB Distance from B to C: = BC Total Distance traveled: =AC Therefore, what can you do with AB and BC to reach AC?

Postulate 1-6: If three points A, B, and C are collinear and B is between A and C, then AB+BC=AC

Class Challenge

Ex. If M is the midpoint of CD, find x, CM, and CD.

AB=BC or Bisect: divides into 2 congruent parts. A midpoint bisects a segment.

Hwk: p , 1-19, 36, 37