Answer:
34
Step-by-step explanation:
180 since it is supplementary
then minus 100 which is 80 then minus 12 which is 68 then half that which is 34
X°+X°+12°+100°=180°{Being strangle angle}
2x°+112°=180°
2x=180°-112°
2x= 68°
X=68°/2
X=34°
