Question

Find the unknown sizes of the angle​

Answer 1

a＝65°
b＝58°
c＝180－65－58＝57°

Hope my answer helped u :)

Answer 2

b=58 ( vertically opposite angle)

58+65+x=180 (Beaing straight angle)

123+x=180

x=180-123

:.x=57

65+b+c=180 (beaing straight angle)

65+58+c=180

123+c=180

c=180-123

c=57

a=65 (beaing vertically opposite angle)

answer

:.b=57

:.c=57

:.a=65