Question

plz answer it............​

Answer 1

Step-by-step explanation:

30+30+ACB=180°

ANGLE SUM PROPERTY OF TRIANGLE

ACB=120°

ACB+ACD=180°

LINEAR PAIR

120+ACD=180

ACD=60°

ACD=ADC=60°

BASE ANGLES OF ISOSCELES TRIANGLE ARE EQUAL

ACD+ADC+CAD=180°

ANGLE SUM PROPERTY OF TRIANGLE

60+60+CAD=180°

CAD=180-120

CAD=60°

BAC+CAD+ X =180°

30+60+X=180°

90+X=180°

X=180-90

X=90°