Which of the following groups is true for $\square ABCD?$
$1$. $\square ABCD$ is a rhombus. $a$. $\overline{AC}$ and $\overline{BD}$ bisect each other.
$2$. $\square ABCD$ is a parallelogram. $b$. $\overline{AC}$ and $\overline{BD}$ bisect each other at right angles.
$3$. $\square ABCD$ is a rectangle. $c$. $\overline{AC}$ and $\overline{BD}$ are congruent and bisect each other at right angles.
$4$. $\square ABCD$ is a square. $d$. $\overline{AC}$ and $\overline{BD}$ are congruent and bisect each other.

  • A
    $(1-b), (2-c), (3-d), (4-a)$
  • B
    $(1-d), (2-a), (3-b), (4-c)$
  • C
    $(1-c), (2-d), (3-a), (4-b)$
  • D
    $(1-b), (2-a), (3-d), (4-c)$

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