Odpowiedź:
a = I AB I b = I B C I
a) Mamy a = 4 - (-3) = 4 + 3 = 7
b = 5 - (-2) = 5 + 2 = 7
a = b
L = 4 a = 4*7 = 28
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---->
AB = [ 4 - (-3) , - 2 -(-2) ] = [ 7, 0 ]
D = ( x, y )
--->
DC = [ 4 - x, 5 - y ] = [ 7 , 0 ]
więc
4 - x = 7 i 5 - y = 0
x = - 3 i y = 5
D = ( - 3, 5)
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Szczegółowe wyjaśnienie:
