Parallelogram Calculator

Calculate parallelogram properties using base, side, and height measurements. The height must be perpendicular to the base.

1. 1

   Step 1

   Enter the base length

2. 2

   Step 2

   Enter the side length (for calculating perimeter)

3. 3

   Step 3

   Enter the perpendicular height (for calculating area)

4. 4

   Step 4

   The calculator computes the area by multiplying base by height

5. 5

   Step 5

   The perimeter is calculated by summing the lengths of all four sides

• 1

  A rectangle is a special case of a parallelogram with right angles

• 2

  A rhombus is a special case with equal sides

• 3

  The height is the perpendicular distance, not the slant side length

• 4

  Opposite sides are parallel and equal

• 5

  Opposite angles are equal and adjacent angles are supplementary

• Using the slant side length instead of perpendicular height for area

• Confusing parallelogram with trapezoid

• Forgetting that the height must be perpendicular to the base

• Assuming the diagonals are equal (this is only true for rectangles)