Question 1193672
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The problem description is deficient; it allows two different interpretations of the given information.<br>
If D is the right angle, then the other two angles are 30 and 60 degrees; the triangle is a 30-60-90 right triangle.<br>
But if E is the right angle, then angle F is 45 degrees, making the triangle a 45-45-90 right triangle.<br>
Of course the answer will be different with the two different interpretations.<br>
Re-post, telling which angle is the right angle.<br>