Question

ABCD is a rectangle.

Answer 1

Answer:

12,5, and 13

Step-by-step explanation:

i got it right on edge

Answer 2

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, $AC^{2}$ = $AB^{2}$ + $BC^{2}$

            = $12^{2}+5^{2}$

            = 144 + 25 = 169

AC = $\sqrt{169}$ = 13