Найдите расстояние между данными точками. 1)A(2;9), B(8;1) 2)K(-2;4), L(2;1) 3)M(4;13), N(13;10) 4)P(-5;0), R(2;-1)
AB = √((8-2)² + (9-1)²) = √(36 + 64) = √100 = 10
KL = √((2+2)² + (4-1)²) = √(16+9) = √25 = 5
MN = √((13-4)² + (13-10)²) = √(81 + 9) = √90 = 3√10
PR = √((2+5)² + (-1)²) = √(49 + 1) = √50 = 5√2
1) AB^2 = (8 - 2)^2 + (1 - 9)^2 = 6^2 + (-8)^2 = 36 + 64 = 100 AB = 10 2) KL^2 = (2-(-2))^2 + (1-4)^2 = 4^2 + (-3)^2 = 16 + 9= 25 KL = 5 3) MN^2 = (13-4)^2 + (10-13)^2 = 9^2 + (-3)^2 = 81 + 9 = 90 MN = 3sqrt(10) 4) PR^2 = (2-(-5))^2 + (-1-0)^2 = 7^2 + (-1)^2 = 49 + 1 = 50 PR = 5sqrt(2)