In a parallelogram, the diagonals bisect each other, which is a defining property of parallelograms.

In a parallelogram, while opposite angles are equal and diagonals bisect each other, all sides being equal is a property of a rhombus, not all parallelograms.

If both pairs of opposite sides are equal, then ABCD is a parallelogram.

The sum of the angles in a quadrilateral is 360 degrees. Therefore, angles C and D must sum to 180 degrees, making them supplementary.

The sum of the angles in any quadrilateral is 360 degrees. Given angles A and B, we can find C + D = 360 - (70 + 110) = 180 degrees.

In a quadrilateral, the sum of the angles is 360 degrees. Given angle A (90) and angle B (45), angle C + angle D = 360 - (90 + 45) = 225 degrees. The only option that fits is angle C = 135 degrees and angle D = 135 degrees.

The sum of the interior angles of any quadrilateral is always 360 degrees, which means ABCD can be any shape that satisfies this condition.

If a quadrilateral has two opposite angles of 90 degrees, it must be a rectangle.

If all sides of a quadrilateral are equal, it is a rhombus, but it can also be a square if the angles are right.

The sum of the interior angles of any quadrilateral is always 360 degrees, which applies to all four-sided figures.

In a rectangle, the diagonals are equal in length and bisect each other.

In a rhombus, opposite angles are equal.

In a rhombus, the diagonals are unequal and bisect each other at right angles.

In a rhombus, the diagonals are perpendicular and they bisect the angles.

If the side length of a square is doubled, the area increases by a factor of four (since area = side^2).

In a trapezium, only one pair of opposite sides is parallel.

The area can be calculated as length × width = 4 × 3 = 12 square units.

A quadrilateral, by definition, has exactly four sides, so the minimum number of sides is 4.

In a rhombus, all sides are equal in length.

The sum of the interior angles of any quadrilateral is 360 degrees.

In a rhombus, while all sides are equal and diagonals bisect each other at right angles, the diagonals are not necessarily equal in length.

In a square, all angles are right angles (90 degrees), not acute.

A rhombus has all sides equal and opposite angles equal.

In a rectangle, the diagonals are equal in length but not perpendicular.

In a rectangle, the diagonals are equal in length but are not necessarily perpendicular.

In a rectangle, the diagonals are equal in length.

In a kite, the diagonals bisect each other but are not equal in length.

A kite has diagonals that are not equal in length, while the others have equal diagonals.

A kite has diagonals that are not equal, which distinguishes it from squares, rectangles, and rhombuses.

In a rhombus, the diagonals bisect each other at right angles.