Bell work Describe some real world examples of parallel lines.

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Presentation transcript:

Bell work Describe some real world examples of parallel lines. Find the letter that is the 276th entry in the following sequence.. G, L, G, L, L, G, L, L, L, G, L, L, L, L,G, L,L, ___. 3. What type of reasoning is used and why?

Homework review Testmoz.com/174031 1-2 Slides Again Quiz retake after lesson

1-3: Segments, Rays , Parallel Lines and Planes Many geometric figures, such as squares and angles, use only the parts of lines called segments and rays.

1. Yes; the segments have the same endpoints 1.Yes; the segments have the same endpoints and contain the same points between them. 2. No; they have different endpoints and continue in different directions

Two collinear rays with the same endpoint. Opposite Rays Two collinear rays with the same endpoint. They always form a line

Name 4 different rays in the figure below. Q P L Name 4 different rays in the figure below. LP QL PQ PL Name two opposite rays. PL and PQ

Coplanar lines that do not intersect. Parallel Lines Coplanar lines that do not intersect.

Name all the segments shown that are parallel to A. DC B. GJ C. AE AD, EF, BC, HI DF AB, GH, JI Skew lines do not lie in the same plane. They are not parallel and they do not intersect Ex: AB and HI

Planes that do not intersect Parallel Planes Planes that do not intersect Parallel Planes Intersecting Planes

Think about this! Air traffic controllers keep eastbound and westbound airplanes from colliding by having them cruise at different altitudes. The airplanes thus pass each other in ____________. Parallel planes

1.Suppose two parallel planes A and B are each intersected by a third plane C. What do you think will be true of the intersection of planes A and C and the intersection of planes B and C? Give an example within this classroom. 2. List four pairs of parallel planes in this classroom. 3. The term skew is from a Middle English word meaning “to escape.” Explain why this might be an appropriate origin for the word that names skew lines.

Quiz Time Period 1 Only Find the next 3 terms in the sequence. 10,11,22,23,46,47, ___,___,___. 1/5,2/5,3/5,4/5,___,___,___. What is the last digit of 2^57 power? True or False: Parallel lines are coplanar lines that do not intersect. True or False: Opposite rays never form a line. 4 5 6 7

Homework testmoz.com/175008