1 2 Points Lines And Planes Answer Key Geometry
Question: Point
Answer: Indicates a location and has no size.
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Question: Line
Answer: Represented by a straight path that extends in 2 opposite directions without the end.
Contains infinitely many points.
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Question: Plane
Answer: Represented by a flat surface that extends without end.
Contains infinitely many lines.
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Question: Collinear points
Answer: Points that lie on the same line.
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Question: Coplanar
Answer: Points and lines that lie in the same plan.
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Question: Space
Answer: The set of all points in 3D.
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Question: Segment
Answer: Is part of a line that consists of 2 endpoints and all points in between them.
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Question: Ray
Answer: Is part of a line that consists of 1 endpoint and all the points of the line on 1 side of the endpoint.
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Question: Opposite Rays
Answer: 2 rays that share the same endpoint and form a line.
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Question: Postulate or Axiom
Answer: An accepted statement of fact.
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Question: Intersection
Answer: The set of points the figures have in common.
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Question: Postulate 1-1
Answer: Through any 2 points there is exactly 1 line.
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Question: Postulate 1-2
Answer: If 2 distinct lines intersect, then they intersect in exactly 1 point.
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Question: Postulate 1-3
Answer: If 2 distinct planes intersect, then they intersect in exactly 1 line.
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Question: Postulate 1-4
Answer: Through any 3 non-collinear points is exactly 1 plane.
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