jika besar sudut SPQ = 109° , Besar sudut PQR adalah .. (pke cara ya) A.64° B.62° C.52° D.45°

layang layang PQRS
sudut SPQ = 109°
<P = <R = 109°
(3p +9) + (5p+4) = 109°
3p + 5p + 9 + 4 = 109°
8p + 13 = 109°
8p = 109° - 13
8p = 96
p = 96/8
p = 12

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