Download - Class 8 math lesson 01(geometry)
Transcript
- 1. 1 1
- 2. 01
- 3.
- 4. c d b a D A EB F x C
- 5. ...
- 6. , : () () () () ()
- 7. a b -: EB Ca x x b A F D : , a b x b a
- 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. a -7: E D a : , a A CB F a a a
- 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. 5 . .4 . . 65
- 12. 1. 4. .;
- 13. 1 4 . .3 . . . () () () 60
- 14.
