WILL GIVE A 5 STAR RATING A THANKS A BRAINLIEST and 12 points.
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since there are 180 degrees in a triangle so :
65+72+y=180 add like terms
137 + y=180 now subtract 137
y= 180-137
y=43 degrees
All Triangle's equal 180 degrees.
So to find this out......72+65=137
180-137=43
The missing angle equals 43 degrees.
-Seth