8.11 Symmetry

BC
by Beverly Crawford7 views·Updated Apr 20, 2020
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  1. Hey, guys, here's a video on your lesson today, 8.1
  2. in its symmetry, and you have been doing symmetry since
  3. kindergarten. But I just kind of wanted to review what
  4. you're looking for and some new vocabulary you're gonna be
  5. dealing with.
  6. So they give you these examples and he said, decide
  7. whether each figure has online of symmetry.
  8. If it does draw the line of symmetry that this
  9. is an equal lateral triangle.
  10. And so it has 123 lines of symmetry and this
  11. is a star.
  12. So it has 123 four lines of symmetry.
  13. And remember, for something to be symmetric, it has to
  14. be the same abode sides it has to reflect.
  15. And so then they give you these flags.
  16. And this is one line of symmetry because the colors
  17. do you matter so the colors have to fold back
  18. over it.
  19. The American boy does not have a lot of symmetry
  20. because of this box of our stars.
  21. Excuse me that rappers are states, and then they, um,
  22. talking about finding these how how many times each finger
  23. will show rotational symmetry with one full rotation.
  24. So it's you started the center and you draw how
  25. many rotations it would have.
  26. So this is 1234 five rotations.
  27. So you do five divided by 360 and you would
  28. get 70.
  29. Let's check that out.
  30. 360. About about 72.
  31. So that means that each one of these high charts,
  32. like high, think of pie is 72 degrees and then
  33. they could be this pin will flag.
  34. I'm sorry.
  35. My camera made it a little blurry, but you can
  36. look at its page.
  37. Rabbit, huh?
  38. So you're drawing drawing lines from the center of the
  39. figure out through the identical places of the figures you're
  40. going here, Here, here, in here.
  41. So you have four lines, meaning that each of these
  42. is 90 degrees.
  43. And they gave you this great example of a stained
  44. glass window talking about congressional ah symmetry and that this
  45. they have four lines.
  46. It's like I said b 90 degrees.
  47. And then the center is the middle where you're pulling
  48. all of the lines from.
  49. So that is what you were going to be experiencing
  50. in your homework, which is by those six in his
  51. one through 18.
  52. In your finding lines, of symmetry.
  53. You're also finding the rational symmetry for seven through nine.
  54. So you're going in the middle and draw on your
  55. lines out, okay?
  56. And then I will see you all at one o'clock
  57. and we will discuss your number, okay?