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

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

If you've enjoyed this video, please consider visiting my website http://www.norledgemaths.weebly.com for additional homework help.

Thanks for watching!

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

Audio track: "Payday" by Jason Farnham. Used with kind permission via download from the YouTube Free Audio library.

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