All ISEE Middle Level Math Resources
Example Question #264 : Geometry
To find the perimeter of a parallelogram, add the lengths of the sides. Opposite sides of a parallelogram are equivalent.
Example Question #2 : Parallelograms
Note: Figure NOT drawn to scale.
Find the perimeter of the parallelogram in the diagram.
The perimeter of the parallelogram is the sum of the four side lengths - here, that formula becomes
Note that the height is irrelevant to the answer.
Example Question #1 : Parallelograms
If the perimter of a parallelogram is and one of the sides is , what is the other side length?
The answer cannot be found
The perimeter of a parallelogram is found by adding up all four sides.
Since there are two pairs of side with equal lengths, two sides must have a length of .
So the perimeter would be
To find the value of the other side length, you would divide the remaining perimeter not include in the other sides by .
That means the other side length would be .
Example Question #3 : Parallelograms
If a parallelogram has side lengths of and , what is the perimeter?
The perimeter of a parallelogram is two times the two side lengths and add them together.
Therefore, this particular problem becomes as follows.