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Points, Lines and Planes. 1-2. I can…. Describe the undefined terms: point, line and plane. Undefined Terms. Co-. ___________ points are points that lie on the same line. Points and lines that lie in the same plane are _____________. All of the points of a line are ____________. Example.

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  1. Points, Lines and Planes 1-2

  2. I can…. • Describe the undefined terms: point, line and plane.

  3. Undefined Terms

  4. Co- • ___________ points are points that lie on the same line. • Points and lines that lie in the same plane are _____________. • All of the points of a line are ____________.

  5. Example • Are points E, F, and C collinear? • If so, name the line on which they lie. • Are points E, F and D collinear? • If so, name the line on which they lie.

  6. Example • Name the planes.

  7. Postulate 1-1 • A _______________ or ________ is an accepted statement of fact. • Postulate 1-1: Through any two points there is exactly one line.

  8. Postulate 1-2 • If two lines intersect, then they intersect in exactly one point.

  9. Postulate 1-3 • If two planes intersect, then they intersect in exactly one line.

  10. Example • What is the intersection of the planes.

  11. Postulate 1-4 • Through any three noncollinear points there is exactly one plane.

  12. Example • Name the plane that contains the following points:

  13. Homework • p. 13 • To turn in: 2, 10, 14, 18, 24, 32, 36, 42, 50, 52, 56, 60, 62, 64, 66, 80 • BONUS: 82

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