Question

помогити!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:
4.
∠AB -  ∠AM =  ∠MB
4,5-1,5=3см  (∠MB)
5.
1) 132-(22+47)=63 (∠COB)
2) 154-(21+27)=106 (∠DOC)
6.
1) 180-(34+27)=119 (∠BOC)
2) 180-(91+53)=36 (∠COD)
7.
1)
36=x9

36:9=4
x=4

4*4=16 (AK)
4*5=20 (KB)
2)
36=x12
36:12=3
x=3
3*7=21(AK)
3*5=15(BK)
8.
1)
х+2х=120
3х=120
х=40
∠AOC=40
∠COB=40*2=80
2)
120=(x+30)*2+(x*2)
120=2x+30
90=2x
x=45
120-(45+30)=45∠AOC
120-45=75∠COB