Verified Answer :

sugarmate

The angles are in the ratio of 5:6:9.
Let the angles be represented by:

5x, 6x, and 9x.

The sum of the interior angles of a triangle is 180.
5x + 6x + 9x = 180
20x = 180
x =      9

The angles are 59 = 45,
69 = 54,
and
9*9 = 81.


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