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Warm Up Graph each inequality. 1. x ≥ 3 2. 2 ≤ x ≤ 6 3. x < 1 OR x > 0

Friday, August 29, 2014 TEKS: G.1D, G.1E Objective: I will - identify, name and draw points, lines, segments, rays and planes and then apply basic facts about points, lines and planes. -2. 0. 2. 4. 0. 2. 4. 6. 0. 1. Warm Up Graph each inequality. 1. x ≥ 3 2. 2 ≤ x ≤ 6

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Warm Up Graph each inequality. 1. x ≥ 3 2. 2 ≤ x ≤ 6 3. x < 1 OR x > 0

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  1. Friday, August 29, 2014TEKS: G.1D, G.1EObjective:I will - identify, name and draw points, lines, segments, rays and planes and then apply basic facts about points, lines and planes.

  2. -2 0 2 4 0 2 4 6 0 1 Warm Up Graph each inequality. 1. x ≥ 3 2. 2 ≤ x ≤ 6 3. x < 1 OR x > 0

  3. Vocabulary The most basic figures in geometry are undefined terms, which cannot be defined by using other figures. The undefined terms point, line, and plane are the building blocks of geometry. All other geometric definitions are built on points lines and planes.

  4. K L M N Vocabulary Points that lie on the same line are collinear. K, L, and M are collinear. K, L, and N are noncollinear. Points that lie on the same plane are coplanar. Otherwise they are noncoplanar.

  5. N M T Vocabulary

  6. Vocabulary A postulate, or axiom, is a statement that is accepted as true without proof. Postulates about points, lines, and planes help describe geometric properties.

  7. Y X Z Example 2: Drawing Segments and Rays Draw and label each of the following. A. a segment with endpointsX and Y. B. opposite rays with a common endpoint Z.

  8. U V Check It Out! Example 2 Draw and label a ray with endpoint Uthat contains V.

  9. XY Example 3: Identifying Points and Lines in a Plane Name a line that passes through two points.

  10. Check It Out! Example 3 Name a plane that contains three noncollinear points. Possible answer: plane GHF

  11. Example 4: Representing Intersections A. Sketch two lines intersecting in exactly one point. B. Sketch a figure that shows a line that lies in a plane.

  12. Check It Out! Example 4 Sketch a figure that shows two lines intersect in one point in a plane, but only one of the lines lies in the plane.

  13. CB and CD 2. A point on BC. Possible answer: BD Lesson Quiz: Part I 1. Two opposite rays. Possible answer: D 3. The intersection of plane N and plane T. 4. A plane containing E, D, and B. Plane T

  14. Lesson Quiz: Part II Draw each of the following. 5. a line intersecting a plane at one point 6. a ray with endpoint P that passes through Q

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