Made by Made by Christlynn AttardChristlynn AttardSir Adrian Dingli Sir Adrian Dingli

St Clare’s College St Clare’s College

• A Quadrilateral is a polygon with four sides…

The Square…

• All four angles are equal.• The diagonals of a square bisect each other.• The diagonals of a square bisect it’s angles.• The diagonals of a square are perpendicular.• Opposite sides of a square are parallel and

equal

• Opposite sides of the rhombus have equal measure

• The two diagonals of a rhombus are perpendicular.

• Every rhombus is a kite.

• Opposite sides of a parallelogram are equal in length.

• Opposite angles of a parallelogram are equal in size.

• Opposite sides of a parallelogram never intersect.

• The diagonals never bisect each other

• It is convex and cyclic • All angles are 90 degrees• Opposite sides are parallel• The two diagonals bisect each

other

All vertices lie in a single circleOpposite angles are supplementaryExterior angle is equal to opposite

interior.