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<MNP = x 60
= 30∞∞
< MPN = 180 - 40-30
= 110
20. , < PTR = 360- 240
= 120 - 50
= x 70
= 35
21. PYTAGORAS ; 20, 48 , 52
LUAS OAP = x 48 x 20
= 480