Select all parallelograms that have a correct height labeled for the given base.

4 parallelograms on a grid, labeled A, B, C, D. Parallelogram A, base = 3 units, height = 2 units. Parallelogram B, base = 3 units, height = 2 units. Parallelogram C, base = 3 units, height = 2 units. Parallelogram D, base = diagonal across two unit squares, height = 3 units. 

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.

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. 

A square with an area of 1 square meter is decomposed into 9 identical smaller squares. Each smaller square is decomposed into two identical triangles.

1. What is the area, in square meters, of 6 triangles? If you get stuck, consider drawing a diagram.
2. How many triangles are needed to compose a region that is \(1\frac 12\) square meters?

Which shape has a larger area: a rectangle that is 7 inches by \(\frac 34\) inch, or a square with side length of \(2 \frac12\) inches? Show your reasoning.