The formula '1/2 × diagonal1 × diagonal2' works for finding the area of some quadrilaterals. Which of the following explains why it cannot be used for all parallelograms?

The diagonals of a general parallelogram are not perpendicular bisectors of each other.

Parallelogram Area

Name: Parallelogram Area
Author: Insta~Lesson

6th Grade · Math · 42 min· Illustrative Mathematics

I can calculate the area of parallelograms by composing rectangles.

1
The area of a parallelogram can be found by multiplying the base by the height.
2
The height of a parallelogram is the perpendicular distance between the base and its opposite side.
3
A parallelogram can be divided into two congruent triangles, and its area is twice the area of one of these triangles.

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