## 1. Perimeter and Area of any triangle Formula.

## 2. Perimeter and Area of Equilateral Triangles Formula.

## 3. Perimeter and Area of Isosceles Triangles Formula.

## 4. Perimeter and Area of Rectangle Formula.

## 5. Area of four walls of a room Formula.

## 6. Perimeter and Area of Square Formula.

## 7. Area of Quadrilateral Formula.

## 8. Quadrilateral when diagonals intersect at right angles.

## 9. Area of Parallelogram Formula.

## 10. Area of Rhombus Formula.

## 11. Area of Trapezium Formula.

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