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Geometry Warm-Up: Identifying Shapes and Figures, Postulates and Segments

Today’s lesson focuses on identifying basic shapes and figures in Geometry to lay the groundwork for future objectives. Homework involves marking figures worksheets and understanding postulates and segments. Topics include Vocabulary, Ruler Postulate, Segment Addition Postulate, Intersecting Lines and Planes, and more.

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Geometry Warm-Up: Identifying Shapes and Figures, Postulates and Segments

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  1. Warm Up Find the values of y by substituting x = 2, 3, 10 y = 3x-1 y = 4(x+3) y = 8(x+4) + x(8+x)

  2. Today’s Objective • To identify basic shapes and figures in Geometry in order to use them for future objectives. • Homework: Marking Figures Worksheet

  3. To identify basic shapes and figures in Geometry • Warm Up √ • Anticipatory Set • Marking Figures • Vocabulary • Ruler Postulate notes • Segment Addition Postulate Notes • Intersecting Lines and Planes • Gallery Walk • Closure

  4. Anticipatory Set • Where in the room do we find: • Point • Line • Plane • Segment • Ray

  5. Measurements: Congruent/Equal Segments: Bisected Segments: Marking Segments E 4 cm F G Y Z X B D H A C

  6. Warm Up • Mark up the angles and segments to show the statements J G Y Z X K M H L

  7. Today’s Objective • TSWBAT understand basic figures and postulates in Geometry in order to use them later in the course. • Homework: Pg 12 #1-19 odd

  8. To identify basic shapes and figures in Geometry • Warm Up √ • Anticipatory Set √ • Marking Figures Worksheet √ • Vocabulary • Ruler Postulate notes • Segment Addition Postulate Notes • Intersecting Lines and Planes • Gallery Walk • Closure

  9. Vocabulary • Postulate • Coordinate • Distance • Between • Congruent Segments

  10. Postulate • A rule that is accepted without any proof

  11. Name of Points A B 3 6 Coordinate of Points Coordinate • The number that corresponds to a point • Where the point is located

  12. Distance • How far apart two things are. • The absolute value of the difference of the coordinates of the point • A is at coordinate 1 • B is at coordinate 8 • The distance between A and B is: Which equals?

  13. B A C Between • When 3 points are collinear then the point in the middle is “between” the other two • B is between A and C

  14. Congruent Segments • Line segments that have the same length are congruent segments.

  15. To identify basic shapes and figures in Geometry • Warm Up √ • Anticipatory Set √ • Marking Figures Worksheet √ • Vocabulary √ • Ruler Postulate notes • Segment Addition Postulate Notes • Intersecting Lines and Planes • Gallery Walk • Closure

  16. A=0 B=3 C=5 D=10 Ruler Postulate • The points on a line can be matched one to one with the real numbers. Giving them coordinates • Using their coordinates, we can find the distance between the points

  17. To identify basic shapes and figures in Geometry • Warm Up √ • Anticipatory Set √ • Vocabulary Quiz √ • Vocabulary √ • Ruler Postulate notes √ • Segment Addition Postulate Notes • Intersecting Lines and Planes • Gallery Walk • Closure

  18. 15 20 B A C 35 A C Segment Addition Postulate • If B is between A and C, the AB + BC = AC • AB = 15 • BC = 20 • AC = 35

  19. Example of Segment Addition • If segment EG is 36 and segment EF is 21, what is segment FG? E F G

  20. www.classzone.com • Classzone.com

  21. Let’s Review the Vocabulary

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