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Do Now 4/1/13

Do Now 4/1/13. Copy HW in your planner. Text p. 312, #1-16 all, 21 Be ready to copy POTW #2. Objective. SWBAT identify and describe geometric figures. In your notebook, list as many words as you can that can be associated with “geometry.” For each word draw the matching symbol or figure.

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Do Now 4/1/13

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  1. Do Now 4/1/13 • Copy HW in your planner. • Text p. 312, #1-16 all, 21 • Be ready to copy POTW #2

  2. Objective • SWBAT identify and describe geometric figures In your notebook, list as many words as you can that can be associated with “geometry.” For each word draw the matching symbol or figure.

  3. Section 8.1 “Building Blocks of Geometry” Point an exact location, represented as a dot. L A D Z K

  4. Plane a flat surface that extends on forever in all directions. How many planes on this figure?

  5. Line segment part of a line with 2 endpoints and all the points in between. D E C F

  6. Line a straight path extending without end in opposite directions. R S T

  7. Ray Part of a line that begins at a point and extends in one direction without ending. B K A J AB K JK A

  8. Identifying Points, Lines, and Planes Identify the figures in the diagram. G H I F H, G, I, and F A. four points Choose any two points on a line to name the line. B. two lines IH, HF C. a plane plane IGF Choose any three points, not on the same line, in any order.

  9. Identifying Line Segments and Rays Identify the figures in the diagram. M N O A. three rays Name the endpoint of a ray first. MN, NM, MO B. two line segments Use the endpoints in any order to name a segment. MN, MO

  10. Remember this? “Similar Figures” Properties of similar figures: 1). Corresponding angles are congruent 2). Corresponding sides are proportional (equal ratios)

  11. Remember this? Corresponding angles – matched angles of two figures When 2 angles have the same measure, they are marked with the same symbol. D A F E C B

  12. Remember this? Corresponding sides – matched sides of two figures D A F E C B

  13. Congruent Two line segments are congruent when they are the same length. 3 C D E F You can use tick marks to indicate congruent line segments.

  14. Properties of congruent figures: 1). Corresponding angles are congruent 2). Corresponding sides are congruent

  15. AB CD ACBD BF DF EC AE Reading Math The symbol means “is congruent to.” Identifying Congruent Line Segments Identify the line segments that are congruent in the figure. One tick mark Two tick marks Three tick marks

  16. A AB AC BCDE B C BD CE E D Identifying Congruent Line Segments Identify the line segments that are congruent in the figure. One tick mark Two tick marks Three tick marks

  17. Given , find the indicated measure. Z A X 15 45 20 45 Y 35° 15 B C 90° 35° 55°

  18. Puzzler… Remove 4 of the segments to leave 5 equal squares.

  19. Homework Text p. 312, #1-16 all, 21

  20. 2) ordered pair 4) integer 6) 6% 8) 104% 10) 0.8 12) 1.31 14) 12 16) 81 18) 563.2 20) 118 22) 32 24) 104 26) 56 28) (3,3) 30) (5,1) 32) (6,4) HomeworkText p. 307, #2-32 evens

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