13 Segments, rays, parallel lines and planes

1
1-3 Segments, rays, parallel lines and planes

• Obj to identify segments, rays and parallel
  lines

2
INTERSECTING PLANES

• Label the index cards as shown below

3
ANSWER THE FOLLOWING QUESTIONS USING THE INDEX
CARDS
Where do AB and CD meet?Where do ab and ef meet?
When the cards are together where do cd and ef
meet? Where do planes m and n meet? Are cd and ef
coplanar?
4
Riddle me this

• HOW MANY POINTS DETERMINE ONE LINE ?
• WHERE DO TWO PLANES INTERSECT?
• HOW DO YOU DETERMINE EXACTLY ONE PLANE?
• WHERE DO TWO LINES INTERSECT?

5
DEFINITIONS

• SEGMENTA PIECE OF A LINE CONSISTING OF TWO
  ENDPOINTS AND ALL THE POINTS IN BETWEEN
• RAY A PIECE OF A LINE WITH ONE ENDPOINT AND GOES
  ON FOREVER IN ONE DIRECTION
• OPPOSITE RAYS TWO COLLINEAR RAYS WITH THE SAME
  ENDPOINT. OPPOSITE RAYS ALWAYS FORM A LINE.

6
DEFINITIONS

• PARALLEL LINES COPLANAR LINES THAT DO NOT
  INTERSECT
• SKEW LINES NON-COPLANAR LINES THAT ARE NOT
  PARALLEL, BUT DO NOT INTERSECT.
• PARALLEL PLANES PLANES THAT DO NOT INTERSECT.

7
SEGMENTS AND RAYS

• IDENTIFY THE SEGMENTS AND RAYS