document.write( "Question 1102149: PLEASE HELP ASAP: The sum of the measures of a pair of alternate angles of two parallel lines is 210°. What are the measures of these two angles? \n" ); document.write( "
Algebra.Com's Answer #716813 by greenestamps(13209)\"\" \"About 
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\n" ); document.write( "Oh, my...!

\n" ); document.write( "Yet another case of two parallel lines forming angles by themselves....!

\n" ); document.write( "Are you writing these questions yourself? Or are you showing them exactly the way they were given to you?

\n" ); document.write( "Obviously there is an unstated transversal here....

\n" ); document.write( "Angles formed by two parallel lines cut by a transversal are either congruent or supplementary. If they don't add to 180°, then they must be congruent. Since the sum of the two angles is 210°, each one must be 105°.
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