coba deh perhatikan disitu ada sudut yang membentuk siku siku.
maka sudut QTR = 90
TRQ = 25
RQT = 180 - (90 + 25) = 65
TQP = 35
PQR = TQP + RQT = 65 + 35 = 100
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coba deh perhatikan disitu ada sudut yang membentuk siku siku.
maka sudut QTR = 90
TRQ = 25
RQT = 180 - (90 + 25) = 65
TQP = 35
PQR = TQP + RQT = 65 + 35 = 100