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rectangle or square
A square.
x2 + 4x + 1 = 0 add and subtract 3 to both sides to complete the square x2 + 4x + 4 = 3 form the square (x + 2)2 = 3 take the square root of both sides x + 2 = ± √3 subtract 2 to both sides x = -2 ± √3
A square.It is a square
If each side of ABCD is four then the midpoints divide each side in half, or two. If you draw the square efgh, each side is 2 times square root 2 from Pythagorean theorem. sqrt (2 sq + 2 sq) =2 square root 2. the area is the sides squared or 2 root 2 times 2 root 2 = 4 x 2 = 8