basics of quadrilateral
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Answer:
There are six basic types of quadrilaterals:
1. Rectangle
Opposite sides are parallel and equal.
All angles are 90º.
The diagonals bisect each other.
A rectangle.
2. Square
Opposite sides are parallel and all sides are equal.
All angles are 90º.
Diagonals bisect each other at right angles.
A square.
3. Parallelogram
Opposite sides are parallel and equal.
Opposite angles are equal.
Diagonals bisect each other.
A parallelogram.
4. Rhombus
All sides are equal and opposite sides are parallel.
Opposite angles are equal.
The diagonals bisect each other at right angles.
A rhombus.
5. Trapezium
A trapezium has one pair of opposite sides parallel.
A regular trapezium has non-parallel sides equal and its base angles are equal, as shown in the following diagram.
A trapezium.
6. Kite
Two pairs of adjacent sides are equal.
One pair of opposite angles is equal.
Diagonals intersect at right angles.
The longest diagonal bisects the shortest diagonal into two equal parts.
A kite.