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**Chapter 1: Tools of Geometry**

Lesson 1: Points, Lines and Planes Chapter 1: Tools of Geometry

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**Definitions Point- represents a location**

Line- made up of points and has no thickness or width, extends infinitely at both ends (cannot be measured) Collinear- points on the same line Plane- flat surface made from points that has no depth and extends in all directions infinitely Coplanar- points or lines on the same plane Space- boundless, 3-D set of all points that contains lines and planes Definitions

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**Step 1- fold the construction paper in half both by width and length (hamburger and hotdog)**

Step 2- Unfold the paper and hold width wise, fold in the ends until they meet at the center crease Step 3- Cut the folded flaps along the crease so that there are now 4 flaps Chapter 1 Foldable

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**Upper Left flap- Lesson 1.1 Points, Lines and Planes**

Label the outside of the flap with the lesson number and title. Inside the flap create a grid with 7 columns and 4 rows.

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**Copy the notes into the foldable.**

Model Drawn Named By Facts Words/ Symbols Examples Point As a dot A capitol letter A point has neither size nor shape point P Line With an arrowhead at both ends Two letters representing points on the line- or the script letter There is exactly 1 line through any two points line n line AB line BA Plane As a shaded, slanted, 4-sided figure A capital script letter or by any three letters of non-collinear points There is exactly 1 plane through any three non-collinear points plane S plane XYZ plane XZY plane ZXY plane ZYX plane YXZ plane YZX P n B A X Y Z S

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**Examples A. Use the figure to name a line containing point K.**

B. Use the figure to name a plane containing point L. C. Use the figure to name the plane two different ways. Examples

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**Examples A. Name the geometric shape modeled by a 10 12 patio.**

B. Name the geometric shape modeled by a water glass on a table. C. Name the geometric shape modeled by a colored dot on a map used to mark the location of a city. D. Name the geometric shape modeled by the ceiling of your classroom. Examples

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Examples

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**Examples A. How many planes appear in this figure?**

B. Name three points that are collinear. C. Are points A, B, C, and D coplanar? Explain. Examples

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Points, Lines, and Planes

Points, Lines, and Planes

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