1.What is a quadrilateral?
2.What is a parallelogram?
3.Formula perimeter of a parallelogram?
4.Which angles are equal in parallelogram?
5.What is the sum of the angles in quadrilateral?
6.What is a rectangle?
8. Formula area of a rectangle?
7.Formula perimeter of a rectangle ?
Rhombus D. A rhombus is a parallelogram that has four congruent sides. Property. The diagonals of a rhombus are perpendicular. AC⟘BD Property. In a rhombus ABCD, the diagonals AC and BD bisect each other since a rhombus is a parallelogram. AO=OC=BO=OD Property. Each diagonal in a rhombus bisects two angles of the rhombus. For example: the diagonal AC is the bisector of angles A and C, the diagonal BD is the bisector of angles B and D
Perimeter of a rhombus P=DC+CB+AB+AD=4a Area of a rhombus
The link between rhombus and life