Odpowiedź:
A = (- 3, 4 ) , B = ( 3 , 4 ) , C = ( 0 , 6 )
xa = - 3 , xb = 3 , xc = 0 , ya = 4 , yb = 4 , yc = 6
P - pole = 1/2I(xb - xa)(yc - ya) - (yb - ya)(xc - xa)I =
= 1/2I(3 + 3)(6 - 4) - (4 - 4)(0 + 3)I = 1/2I6 * 2 - 0 * 3I = 1/2I12I = 1/2 * 12 = 6