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Basics of Geometry: Points, Lines, and Planes Fundamentals

Gain an introduction to geometry principles such as points, lines, and planes. Learn about segments, rays, and intersections, with examples and real-life applications highlighted. Explore the 3-D space concept and geometric figures naming conventions.

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Basics of Geometry: Points, Lines, and Planes Fundamentals

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  1. Introduction to Geometry: Points, Lines, and Planes

  2. Basic Geometric Figures • Point: Location in space represented by a dot and a capital letter. • Points have no size, only position. • Example:

  3. Basic Geometric Figures • Line: Connected series of points that extends in both directions without end (represented by arrows). • Lines can be named by any two points on the line, or by one lowercase letter.

  4. Basic Geometric Figures • Plane: Infinite set of points forming a flat surface extending in all directions, represented by a four-sided figure. • Example:

  5. Basic Geometric Figures (Aspence) SPACE—is 3-D • SPACE—the set of all points.

  6. Basic Geometric Figures • Segment: Part of a line bounded by two endpoints.

  7. Basic Geometric Figures • Ray: Part of a line that starts at a certain (end)point and continues forever in one direction.

  8. Naming Geometric Figures • Intersection: The point shared by two crossing figures.

  9. Real Life Example E • Find four segments that intersect AC. • Find three segments || to AC. • Find four segments skew to AC. A F B FedEx G C H D

  10. Review: copy & paste to go to this review video from Math Antics • <iframe width="560" height="315" src="https://www.youtube.com/embed/k5etrWdIY6o?list=PLT10jO8mZyfDtXDM4jhoCvreIlXPpXhyc" frameborder="0" allowfullscreen></iframe>

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