tolong jawab ya yg nomor 35

Garis dan Sudut

<PRS + <QRS = 180°
3X + 5X + 20 = 180
8X = 180 - 20
8X = 160
X = 160/8
X = 20

<QRS = 5X + 20
<QRS = 5 x 20 + 20
<QRS = 100 + 20
<QRS = 120° (D).

*semoga membantu. sukses selalu ^_^