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GBK Geometry

GBK Geometry. Jordan Johnson. Agenda. Lesson: Basic Vocabulary Lesson: Doing Math Homework Well Classwork / Homework. The Nazca Lines. The Nazca Lines. The Nazca Lines. The Nazca Lines. Objects (by dimensions). Definitions. Zero-dimensional: Point : a location in space.

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GBK Geometry

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  1. GBK Geometry Jordan Johnson

  2. Agenda • Lesson: Basic Vocabulary • Lesson: Doing Math Homework Well • Classwork / Homework

  3. The Nazca Lines

  4. The Nazca Lines

  5. The Nazca Lines

  6. The Nazca Lines

  7. Objects (by dimensions)

  8. Definitions • Zero-dimensional: • Point: a location in space. • (Represented on paper by a dot, usually, but has no dimensions.) • One-dimensional: • Line: a straight length that has no breadth • (Or, a one-dimensional object extending infinitely in both directions.) • Note that lines are defined by two points. • Line segment: part of a line, bounded by two endpoints. • Two-dimensional: • Plane: a flat surface with no boundaries.

  9. Sketches • Sketch examples of lines, points, and planes (to go with your definitions). • Note: use arrowheads to indicate infinite extension of lines: • Name points with uppercase letters.

  10. Qualities of Lines, Planes, & Points • Lines intersect in points; planes intersect in lines. • Collinear points lie on a single line. • Non-collinear points do not. • Coplanar points lie within a single plane. • Non-coplanar points do not. • Concurrent lines all contain the same point.

  11. Pause

  12. Assignment • Now: Textbook, p. 10, Chapter 1 Lesson 1, Set I. • Work alone or in pairs. • Homework due Tuesday:the Set I problems andp. 11, Chapter 1 Lesson 1, Set II. • Remember: • Neat writing. • Show enough to tell what the original problem was.

  13. Clean-up / Reminders • Pick up all trash / items. • Push in chairs (at front and back tables). • See you tomorrow!

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