Answer: No
Explanation:
If you added 11 + 24 + 25 you would get 60.
A right angle is 90 degrees and you can tell if it's a right angle or not if it forms an "L".
Hint:
Try drawing a square where the 2 lines in the word "L" meet if you can draw a square then that means it's a right angle and that it equals 90 degrees.