Formulas for the Perimeter and Area of Parallelograms Trapeziums Rhombuses and Kites (8)

Find perimeters and areas of parallelograms, trapeziums, rhombuses and kites (ACMMG196)

LO:To find the formula for the perimeters and areas of parallelograms, trapeziums, rhombuses and kites..
Know:

  • the properties and dimensions of 2-D shapes (parallelogram, trapeziums, rhombuses and kites)
    the units of measurement for

Understand:

  • That formulas can be used to quickly find the perimeter and area of parallelograms, trapeziums, rhombuses and kites.

Do:

  • I can find the perimeter and area of parallelograms, trapeziums, rhombuses and kites..

Parallelograms, Trapeziums, Rhombuses and Kites

Perimeter of Parallelograms

Finding the perimeter of Parallelograms is easy, all you have to do is measure the 4 sides of the parallelogram. (A + A + B + B) or (2A + 2B)

The top and bottom sides of the parallelogram should be equal, and the two sides of the parallelogram should also be equal.

Area of Parallelograms
Finding the area of parallelograms is easy, all you have to do is multiply the base by the height.

Perimeter of Trapeziums

Finding the perimeter of Trapeziums is pretty easy, all you have to do is measure the 4 sides of the Trapezium. (A + B + C + D)

Area of Trapeziums
Finding the area of trapeziums is a bit more difficult, but all you have to do is add the top and bottom numbers together then divide by 2, and multiply by the height.

Perimeter of Rhombuses

Finding the perimeter of Rhombuses is pretty easy, all you have to do is measure the 4 sides of the Rhombus. Since all four sides of a Rhombus are the same, you can just use the formula (4A)

Area of Rhombuses

Finding the area of Rhombuses is a bit more difficult, but all you have to do find the values of the diagonals, multiply them together then half the answer. A rhombus is essentially half of a rectangle!

Perimeter of Kites

Finding the perimeter of Kites is pretty easy, all you have to do is measure the 4 sides of the Kite.

Area of Kites

Finding the area of kites is the same as the area as finding the area of a Rhombus. Find the values of the diagonals, multiply them together then half the answer. A kite is essentially half of a rectangle!


 

Parallelograms, Trapeziums, Rhombuses and Kites Videos

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