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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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I can…. • Describe the undefined terms: point, line and plane.
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 • 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.
Example • Name the planes.
Postulate 1-1 • A _______________ or ________ is an accepted statement of fact. • Postulate 1-1: Through any two points there is exactly one line.
Postulate 1-2 • If two lines intersect, then they intersect in exactly one point.
Postulate 1-3 • If two planes intersect, then they intersect in exactly one line.
Example • What is the intersection of the planes.
Postulate 1-4 • Through any three noncollinear points there is exactly one plane.
Example • Name the plane that contains the following points:
Homework • p. 13 • To turn in: 2, 10, 14, 18, 24, 32, 36, 42, 50, 52, 56, 60, 62, 64, 66, 80 • BONUS: 82