Respuesta :
Answer:
AB = 12 BC = 5 AC = 13
Step-by-step explanation:
opposite sides of a rectangle are congruent, therefore AB = DC = 12
and BC = AD = 5.
Now, AC is found by using the Pythagorean theorem.
So, [tex]AC^{2}[/tex] = [tex]AB^{2}[/tex] + [tex]BC^{2}[/tex]
= [tex]12^{2}+5^{2}[/tex]
= 144 + 25 = 169
AC = [tex]\sqrt{169}[/tex] = 13