1) AB = (-2-3,3-(-5)) = (-5,8)x = -5, y=82) AB = (-5-(-2),-8-4) = (-3,-12)x = -33) AB = (2-(-5),3-(-7)) = (7,10)y = 104) |MK| = sqrt(8^2+(-6)^2) = sqrt(64+36) = sqrt(100) = 105) MK = (-6-6,-3-2) = (-12,-5)|MK| = sqrt((-12)^2 + (-5)^2) = sqrt(144+25) = sqrr(169) = 136) Xm = (0+8)/2 = 4Ym = (-4+0)/2 = -27) Xk = (5-3)/2 = 18) AB = (2-(-3),3-3) = (5,0)|AB| = sqrt(5^2+0^2) = sqrt(25) = 59) AB = (0-2,-5-(-3)) = (-2,-2)|AB| = sqrt((-2)^2 + (-2)^2) = sqrt(8) = 2sqrt(2)BC = (4-0,-1-(-5)) = (4,4)|BC| = sqrt(4^2+4^2) = sqrt(32) = 4sqrt(2)AC= (4-2,-1-(-3)) = (2,2) |AC| = sqrt(2^2+2^2) = sqrt(8) = 2sqrt(2)|BC| = |AB| + |AC|, значит, А - лежит между B и C.10) AO = (0-3,0-(-4)) = (-3,4)|AO| = sqrt((-3)^2 + 4^2) = sqrt(25) = 5