7409429995

resheba.me

3lf Aft Tli:KyTM.

PoaB*naunui:

+    +    +    =    ; L A -ŁC ;

jLA+1 B=ŁC + /LD = 180°. a) / B = 180°-Z.A-70° = Z. D ; C A\

LlA = £B + 70^o |<iA=180°-

NQ'

_/b2 A^J.A

/V QO°

o) ^ A+ZlC = 90^o^z:/N£C=i^?- = 45^o ; £B = 180^o-45^o=135° = £B;

r) Z.CAB + AaAC«£A*80^#+45⁹ = 75°*Z.C; Z.B = 180^o-75°*I05®«Z.2> .

Pewe6a.MM