Question by vũ tuấn mạnh clever12456789

08/08/2018 at 04:31

jimin bts cute 09/08/2018 at 01:46

ko viết bằng T.A à??????
vũ tuấn mạnh clever12456789 selected this answer.
Sherlockkichi 09/08/2018 at 02:35

a) We see: xAz = AOC = 65^o They are in the same position as Az//Oy

b) Because Ax//Oy should be AOC + OAz = 180^o (two cornerson the same side)

=> OAz = 115^o = CBz

They are in the same position => Ox // Bt

c) Because KBC and CBz two adjacent angles KBC = 180^o - 115^o

=> OCB = 90^o - 65^o

=> OCB = 25^o

d) We see: HAK = AHO = 90^o

=> HAK + AKC = 180^o. They are in the same position => AH // CK

P/s: Next time you write in Vietnamese, you go to olm or hoc24