Find the area of each parallelogram.

Parallelogram A, base = 9 centimeters, height = 4 centimeters.

Parallelogram B, base = 5 centimeters, height = 4 centimeters.  

Parallelogram C, base = b, height = h.

Which three of these parallelograms have the same area as each other?

Four parallelograms, labeled A, B, C, and D. Figure A, the top and bottom sides each 5 units, slanted sides descend 3 units and move right 1 unit. Figure B, the top and bottom sides are each 3 units, slanted sides ascend 5 units while moving right 6 units. Figure C is a square of 4 units on each side. Figure D, the left and right sides are each 3 units, and the top and bottom sides descend 1 unit as they move right 5 units.

The Dockland Building in Hamburg, Germany is shaped like a parallelogram.

If the length of the building is 86 meters and its height is 55 meters, what is the area of this face of the building?

Do you agree with each of these statements? Explain your reasoning.

1. A parallelogram has six sides.
2. Opposite sides of a parallelogram are parallel.
3. A parallelogram can have one pair or two pairs of parallel sides. 
4. All sides of a parallelogram have the same length.
5. All angles of a parallelogram have the same measure.