Parallelogram: Sides opposite are parallel What shape is this? Parallelogram: Sides opposite are parallel Find the formula for area of a parallelogram on the STAAR chart A = bh, where b is the base and h is the height

Parallelogram: Sides opposite are parallel Where is the base? Where is the height? This is also called “the altitude” height base What happens if we cut this triangle off?

height base

height base Let’s turn the triangle a different color to make It easier to see

height base

height base A rectangle What shape is it now? A = bh