Question

Please help, it'll be appreciated and if possible, I'll give brainliest

Answer 1

Step-by-step explanation:

See the attached image.  I numbered angles differently so as not to make an assumption that angles numbered the same are congruent.

$\overline{AB} \parallel \overline{CD}\\\angle1 \cong \angle3$ (alternate interior angles are congruent)

$\overline{AD} \parallel \overline{BC}\\\angle 2 \cong \angle 4$ (alternate interior angles are congruent)

$\overline{AB} \cong \overline{CD}$  (opposite sides of a parallelogram are congruent)

$\triangle{ABO \cong \triangle{CDO}$  (ASA - side/angle/side)

$\overline{AO} \cong \overline{CO}\\\overline{BO} \cong \overline{DO}$  (corresponding parts of congruent triangles are congruent)

The diagonals bisect each other!