What are the properties of a …

Trapezium:

1. Like other quadrilaterals, the sum of all the four angles of the trapezium is equal to 360°
2. A trapezium has two parallel sides and two non-parallel sides
3. The diagonals of regular trapezium bisect each other
4. The length of the mid-segment is equal to half the sum of the parallel bases, in a trapezium
5. Two pairs of adjacent angles of a trapezium formed between the parallel sides and one of the non-parallel side, add up to 180 degrees.

Rhombus:

• All sides of the rhombus are equal.
• The opposite sides of a rhombus are parallel.
• Opposite angles of a rhombus are equal.
• In a rhombus, diagonals bisect each other at right angles.
• Diagonals bisect the angles of a rhombus.

Parallelogram:

• The opposite sides are congruent.
• The opposite angles are congruent.
• The consecutive angles are supplementary.
• If anyone of the angles is a right angle, then all the other angles will be the right angle.
• The two diagonals bisect each other.
• Each diagonal bisects the parallelogram into two congruent triangles.