<PRE><B>Question 1043412</B>
x is the angle
supplementary angles add to 180
2/3 of the angle is (2/3)x
Therefore x+(2/3)x=(5/3)x
That equals 180
multiply both sides by the reciprocal of (5/3)
the left side becomes x, the right side becomes 180*(3/5)=108 degrees.
The angle is 108 degrees
(2/3) of it is 72 degrees ANSWER
They add to 180 degrees</PRE>