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Marinchikkk
@Marinchikkk
October 2021
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Найдите площадь четырехугольника АВСD, если известны координаты его вершин:
А(1;3), В(2; 6), С(4; 3), D(2; 1).
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Jendosina5
1)АВ= √(5+3)2+(-1+1)2= √25 = 5 ,
2)ВС= √(1-1)2+ (-4-2)2= √25= 5 ,
3)СD= √(1-5)2+ (-4+1)2=√25 = 5 ,
4)АD = √( 1+3)2+ ( -4+1)2=√25=5
АВ=ВС=СD=АD, АВСD- ромб.
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Answers & Comments
2)ВС= √(1-1)2+ (-4-2)2= √25= 5 ,
3)СD= √(1-5)2+ (-4+1)2=√25 = 5 ,
4)АD = √( 1+3)2+ ( -4+1)2=√25=5
АВ=ВС=СD=АD, АВСD- ромб.