Area of a parallelogram from a rectangle (cut-out demo)

Where does the formula for the area of a parallelogram come from? Watch this little demonstration here.

Thanks for watching!

Video created using Microsoft Movie Maker. Used with permission from Microsoft.

Audio track: "Rollanddrop" by Jingle Punks. Used with kind permission via download from the YouTube Free Audio library.

[Voltronev]

Thanks for this - visual aids are a great help for me.

[GROW_ST]

Very simple and easy to understand thanks...

[alicihandogan]

Thanks very much. It's really helpful.

[Amine-gzgq]

Here's how I visualize it: when you tilt your left side to the right, the lost area is automatically recovered by the right side.

[ravisiddamreddy]

thank u so much mam it helped me a lot

[mchi]

...my teacher gave me this video to help with the test but I still don’t understand.

[blxckbxrrie]

Welcome everyone to the sad and confusing life of online school

[apsms]

Mam please tell the conclusion and all also