1 / 85

Lesson 7-1

I can determine whether a dilation is an enlargement, a reduction or congruence transformation. I can determine the scale factor for a given dilation. Lesson 7-1. size. image. preimage. enlargement. reduction. congruent. reduction. enlargement. 3/6 or 0.5. 6/4 or 1.5. 3. A’.

dalel
Download Presentation

Lesson 7-1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. I can determine whether a dilation is an enlargement, a reduction or congruence transformation I can determine the scale factor for a given dilation Lesson 7-1

  2. size

  3. image preimage enlargement reduction congruent

  4. reduction enlargement 3/6 or 0.5 6/4 or 1.5

  5. 3 A’ enlargement 66 mm 22 mm 28 mm 84 mm 22 mm 66 mm C’ B’

  6. 1/3 reduction A’ B’ D’ C’

  7. P’(rx, ry)

  8. (-4, 4) (-2, -6) (6, 6)

  9. (-2, 1.5) (-1, -2) (2.5, -1)

  10. image r = preimage 6 4 = x x = 1.5

  11. image r = preimage 2 x = 3 5 x = 3.33

  12. 180 in 4 1 = 0.0167 = 96 in 240 60 240 in 4 x = x = 3 in 240 180

  13. 60 = 30 2 60 x 60 in = 2 5 x = 150 in

  14. ASSIGNMENT 7-1 worksheet

  15. I can write ratios. I can use properties of proportions. Lesson 7-2

  16. quotient a : b with the same units Write with : or as a fraction, a/b

  17. females : males

  18. elective : non-elective 2 : 3

  19. a : b : c Ex: ratio of freshmen to sophomores to juniors Cannot be written as a fraction

  20. 84 7 x 240 5x + 7x + 8x = 5 x 20x = 240 60 96 8 x x = 12

  21. 24° 2 x 180 2x + 10x + 3x = 3 x 36° 15x = 180 x 10 120° x = 12

  22. 7x L W 3x 3x 140 20x = x = 7 7x L = 49

  23. fractions equal diagonals 4(5) = 10(2)

  24. 72 8y = 163.8 6x = y = 9 x = 27.3

  25. 40 4(2x + 3) = 4(x + 1) 3(x – 1) = 8x + 12 = 40 4x + 4 3x – 3 = x = 3.5 x = -7

  26. length width 40x = 16 40 144 = 9 x x = 3.6 3.6 inches

  27. miles inches 4 x x = 14 = 1 3.5 14 miles

  28. gal miles 5 x x = 14.58333 = 350 120 14.6 gallons

  29. ? 5 wide 3.5 18 tall 5 x = x = 25.7143 18 3.5 25.7 inches

  30. ASSIGNMENT 7-2 worksheet

  31. I can identify similar figures. I can find missing side lengths in similar figures. Lesson 7-3

  32. PENTOMINOES

  33. Use 4 tiles to make this shape

  34. DOUBLING • Work with your partner to make a shape like the “F” tile, but twice as big • Use colored pencils to record your answer on the back of the worksheet • Double as many other Pentominoes as you can. Use the grid paper if needed • Record all answers using colored pencils

  35. 4 2 4 6 2 3 1 2

  36. shape size shape size

  37. congruent proportional congruent similar

  38. 12 15 18 9 10 12 8 6 All = 1.5 Similar, all angles congruent, all sides proportional.

  39. 10 8 6 4 3 5 All = 2 X 5 3 Y Z 4 Similar, all angles congruent, all sides proportional.

  40. 13 14 = x 7 x = 6.5

  41. x = 6 8 x = 9 12 y = 15 8 10 = y 12

  42. 27 Find x first 18 12 = x 18 x = 27

  43. 27 Find y next! y + 1 12 = 24 18 18(y + 1) = 288 x = 27, y = 15 18y + 18 = 288 y = 15

More Related