Question

Nih aku kasih poin banyak,tapi please pake cara​

Answer 1

A2+A3=180°(berpelurus)

54°+3x°=180°

3x°=126°

x°=42°

A2+B2=180°(dalam sepihak)

54°+4y°=180°

4y°=126°

y °=°

x°+y°=42°+31,5°

=73,5°(d)

Answer 2

A2+A3 = 180

54 + 3x = 180

18+x = 60

x = 42

B1 = 4y = A3 = 3x

4y = 3.42

y = 3.10,5

y = 31,5

x+y = 42+31,5 = 73,5