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steve816

  • one year ago

What is a formula for the area of an equilateral triangle and how does it work?

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  1. dan815
    • one year ago
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    |dw:1444024191188:dw|

  2. dan815
    • one year ago
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    |dw:1444024212323:dw|

  3. dan815
    • one year ago
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    |dw:1444024307712:dw|

  4. dan815
    • one year ago
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    |dw:1444024369099:dw|

  5. dan815
    • one year ago
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    heres a way to show that the perpendicular line must half the agle of an equlilateral triangle

  6. dan815
    • one year ago
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    start with some equilateral triangle

  7. dan815
    • one year ago
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    |dw:1444024499844:dw|

  8. dan815
    • one year ago
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    |dw:1444024516733:dw|

  9. dan815
    • one year ago
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    now we know we have same length on top, we invert this same triangle reflect it down

  10. dan815
    • one year ago
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    |dw:1444024569081:dw|

  11. dan815
    • one year ago
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    but now this means |dw:1444024618655:dw|

  12. dan815
    • one year ago
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    so these 2 triangle u from with the perpendiculars have cut the triangle in halves

  13. dan815
    • one year ago
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    |dw:1444024650246:dw|

  14. dan815
    • one year ago
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    then that means these are congruent triangles threfore the 60 degree must have been split into 2, 30 degree angles up at the top

  15. dan815
    • one year ago
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    |dw:1444024707682:dw|

  16. dan815
    • one year ago
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    now u can solve for height in any means

  17. steve816
    • one year ago
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    Wow, great explanation! This all makes sense now!

  18. steve816
    • one year ago
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    Thanks 815

  19. dan815
    • one year ago
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    :)

  20. dan815
    • one year ago
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    sending the 816 model some upgrades atm

  21. steve816
    • one year ago
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    haha

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