class 8 math lesson 01(geometry)

Download Class 8 math lesson 01(geometry)

Post on 12-Aug-2015

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  1. 1. 1 1
  2. 2. 01
  3. 3.
  4. 4. c d b a D A EB F x C
  5. 5. ...
  6. 6. , : () () () () ()
  7. 7. a b -: EB Ca x x b A F D : , a b x b a
  8. 8. : (1) BE BC=a B BF BA=b (2) A C a b D () A, D C,D , ABCD- xEBF ABC EB Ca x b A F D b a
  9. 9. a -7: E D a : , a A CB F a a a
  10. 10. : (1) BE BC=a B BF BA=a (2) A C a D (3) A D C D , ABCD - BCBF ABC E D a A CB F a a a
  11. 11. 5 . .4 . . 65
  12. 12. 1. 4. .;
  13. 13. 1 4 . .3 . . . () () () 60
  14. 14.