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Equilateral triangle angles

  1. Jun 1, 2013 #1
    Hi all,

    How would you determine the angle i in the following equilateral triangle.


    Thank you.
  2. jcsd
  3. Jun 1, 2013 #2


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    Science Advisor
    Homework Helper

    Hi Googl! :smile:

    First, find angle C. :wink:
  4. Jun 3, 2013 #3
    If ABC and ADC are right angles then
    Compute DBA
    Compute ADB
    Compute angle i
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