Question

14 multiple choice 6 points
abcd is a square.
what is the length of line segment dc?
5 units
7 units
11 units
13 units

Explanation:

Step1: Set sides equal (square property)

$x+6=2x-1$

Step2: Solve for $x$

$6+1=2x-x \implies x=7$

Step3: Calculate DC length

DC = AB = $x+6 = 7+6$

Answer:

13 units