tolong jawab no 1,3,8

1). aob =180° aob=180°
aob-aoc=boc aob-boc=aoc
180-105=75° 180-82=98°

3). 180=a+68+a 180=5b+12+2b
2a=180-68 7b=180-12
a=112/2=56° b=168/7=24°

DEG = a+68=56+68=124°
KLN = 5b+12=5.24+12=132°


good luck... be a the best... ;-)