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Chapter 1.1

Chapter 1.1. Building Your Geometry Portfolio. “Undefined” Terms. Point – an exact location Line – never ending straight path Segment – 2 endpoints and all the points between Ray – never ending path in ONE direction Angle – 2 rays with a common endpoint Plane – never ending flat surface.

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Chapter 1.1

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  1. Chapter 1.1 Building Your Geometry Portfolio

  2. “Undefined” Terms • Point – an exact location • Line – never ending straight path • Segment – 2 endpoints and all the points between • Ray – never ending path in ONE direction • Angle – 2 rays with a common endpoint • Plane – never ending flat surface

  3. Point Represented by: a dot Labeled with: Capital Letter Written Notation: point A or A • B • A • C

  4. Line Represented by: a line with arrows at each end Labeled with: 2 Capital Letters or a lower case cursive letter Written Notation: AB Line l l B A

  5. Segment Represented by: 2 dots and a connecting line Labeled with: 2 Capital Letter Written Notation: AB B C D A

  6. Ray Represented by: an endpoint and an arrow Labeled with: 2 Capital Letters Written Notation: FG ML M F G L

  7. Angle Represented by: 2 rays Labeled with: 3 points or the vertex Written Notation: <F, <HFG, or <GFH The Vertex is the common endpoint The Sides are the rays H F G

  8. Plane Represented by: a parallelogram Labeled with: Capital Cursive Letter or 3 non-colinear points Written Notation: plane N or M M L N

  9. Other terms • Intersect – lines, planes, lines & planes • Collinear • Non-collinear • Coplanar • Non-coplanar • Midpoint

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