The area of a lattice is defined as the area of a fundamental one of these shapes.
The area of a lattice is defined as the area of a fundamental one of these shapes. One law named for them states that the sum of the squares of its diagonals equals the sum of the squares of its sides. Like more specific quadrilaterals, the area of one of these shapes equals the magnitude of the cross product of two vectors forming adjacent sides, and the other law named for it is used to add vectors. The diagonals of these polygons bisect one another, and any two adjacent interior angles are supplementary. Name this quadrilateral that has two pairs of congruent, parallel sides.
The area of a lattice is defined as the area of a fundamental one of these shapes.
parallelogram(s) [accept unit cell before “squares”]