no.2 sama no.4 plissss nahhh dijawabbb

2)DBE = 180 - ( 105 + 48) = 27

4)a. PTS & PRQ
PQR & PST

b. PST = 180 - (64+58) = 180 - 122 = 58°
PQR = 58°
PRQ = 58
QST = 180 - 58 = 122°
RTS = 180 - 58 = 122°