Posted by Allen on Wednesday, May 4, 2011 at 7:22pm.
angles 1 and 2 are adjacent angles on a line. What is the sum of the measures of the angles?
a.30
b.60
c.90
d. 180 I think the answer is b.

Math simple question  Ms. Sue, Wednesday, May 4, 2011 at 7:30pm
How many degrees are represented by a straight line?
http://www.mathsisfun.com/angles.html 
Math simple question  ryan, Sunday, February 12, 2012 at 3:02pm
The sum of those angles in 180 degrees. That is because to form a straight line, you need 180 degrees.