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a) <PRQ = < PRS = 20 drajad
b) <RPS = < RPQ = 70 drajad
< PQR = 1/2 x < POR
= 1/2 x 180°
= 90°
< PRQ = 180° - (<PQR + <RPQ)
= 180° - (90°+70°)
= 180° - 160°
= 20°
krna segitiga kongruen maka:
< RPS = < PQR = 90°
Semoga membantu ya :)