The interior angles in any triangle sum to 180 degrees, so the measure of angle E is 180 - 65 - 50 = 65 degrees.
Assuming side d is opposite angle D, side e is opposite angle E, and side f is opposite angle F, we can use the law of sines to determine the side lengths e and f.


Angles E and F have the same measure, so
as well.
The next number is half of the previous number so the answer is D
^3/1331 = 11
11 x 11 x 11 = 1331
That answer will be 7.
Explanation:
=1-3+9
=10-3
=7