A quadrilateral with one pair of parallel sides is classified as a trapezium.

In the formula for the area of a quadrilateral, d1 and d2 represent the lengths of the diagonals.

If the diagonals of a quadrilateral bisect each other, it is a property of parallelograms.

The area of a rhombus can be calculated using the formula (1/2) × d1 × d2 = (1/2) × 10 × 24 = 120 cm².

In a cyclic quadrilateral, the opposite angles are supplementary, meaning they add up to 180 degrees.

In a parallelogram, opposite angles are equal, so the opposite angle also measures 60 degrees.

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.

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

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

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

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

A rhombus has all sides equal and opposite angles equal.

A square has equal diagonals, which is a property of squares and rectangles.

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

In a rectangle, opposite sides are equal and all angles are indeed 90 degrees.

A rhombus has all sides equal, but the angles are not necessarily equal.