Respuesta :

[tex]\text {Slope of AE = Slope of AC = } \dfrac{1}{2} [/tex]

[tex]\text {Slope = } \dfrac{\text {change in y}}{\text {change in x}} [/tex]

[tex] \dfrac{1}{2} = \dfrac{3}{AD}[/tex]

[tex]AD = 3 \times 2[/tex]

[tex]AD = 6 \text { unis}[/tex]