+ chapter 1 section 1-3 segment, rays, parallel lines, & planes
TRANSCRIPT
+Chapter 1Section 1-3 Segment, Rays, Parallel Lines, & Planes
+Warm-Up:
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How do you name a ray?
The first letter naming a ray is always its endpoint. The second letter is any other point
on the ray.
Remember!! Opposite Rays are two distinct collinear rays with only their
end points in common.
The notation for naming lines, line segments, and rays match the figure.
Line AB
Segment AB
Ray AB
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+Are the lines parallel???
Plot the following points
And determine if they produce parallel Lines.
Line a: (1,2) & (3,4)Line b: (-3,1) & (1,3)
Line a: (0,0) & (2,2)Line b: (0,-3) & (2,-1)
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a.. b.
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Name all segments that are parallel to AD
Name all segments that are skew to
GJ,HI ,BC
AD
GH ,BH ,CI , JI
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How are parallel and skew lines alike?
They both never intersect
How are they different??
Parallel lines are in the same plane, skew lines are not.
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Switch to Flipchart for next exercises – these exercises are on page 19 in your textbook – 5 – 7, 11 – 13, 14 – 16
+Do you get it???
+Homework
Practice 1-2 + 1-3
Plus page 23 Lesson 1-2 review #71 – 78
Prepare for quiz on sections 1-2 through 1-3!!!