jika besar sudut SPQ= 109 , Besar sudut PQR adalah... A 64 B 62 C 52 D 45 mohon bantuan nya

Layang-layang PQRS
< SPQ = 109°
3p + 9 + 5p+ 4 = 109°
8p + 13 = 109°
8p = 109 - 13
8p = 96
p = 96/8
p = 12

< PRQ = < RPQ = 5( 12) +4 = 64°
< PRQ + < RPQ + < PQR = 180°
64° + 64° + <PQR = 180°
128° + < PQR = 180°
<PQR = 180° - 128°
<PQR = 52°