Question

Consideram punctele A(3,2) B(5,4) C(0,-2) si D(-2,0) Demostrati ca AB=CD

Answer 1

Folosesti formula AB=$\sqrt{(xB-xA)^2+(yB-yA)^2}$ unde x si y sunt coordonatele celor doua puncte , deci

AB=$\sqrt{(5-2)^2+(4-2)^2)} = <strong>\sqrt{8}$

CD=$\sqrt{(-2-0)^2+(0-(-2))^2} = <strong>\sqrt{8}$
Deci AB=CD