Points, Lines, and Planes

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Points, Lines, and Planes

• Eric Hoffman
• Advanced Geometry
• PLHS
• Aug. 2007

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Key Topics

• Undefined terms terms that can only be
  explained by using examples or descriptions
• Lines, Planes, Points

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Key Topics

• Point simply a location
• Labeled with a capital letter
• Line made up of points and has no thickness or
  width
• Labeled using two points corresponding to the
  line or a lower case script letter
• Plane flat surface made up of points
• Labeled by naming 3 points in the plane or
  capital script letter

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Key Topics

• Collinear points that are located on the same
  line
• Coplanar points that lie on the same plane

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Key Topics

• Collinear points that are located on the same
  line
• Coplanar points that lie on the same plane

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Key Topics

• Name a line segment containing point D
• Name a plane containing line segment AC
• Find 3 collinear points
• Find 3 coplanar points

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Key Topics

• How many different planes are shown in the figure
• Name a point that is not coplanar with plane CDE