document.write( "Question 1208365: Given: Triangle ABC, Bisectors of < a and < b meet at O. Prove: m (< aob) > 90 degrees \n" ); document.write( "
Algebra.Com's Answer #846745 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "In triangle ABC, the sum of the three angle measures is 180 degrees, so the sum of the measures of angles A and B is less than 180.

\n" ); document.write( "In triangle AOB, angle OAB is half of angle A and angle OBA is half of angle B; therefore, the sum of the measures of angles OAB and OBA is less than 90 degrees.

\n" ); document.write( "Angle AOB is the third angle in triangle AOB; since the sum of the measures in that triangle is 180 degrees, the measure of angle AOB is greater than 90 degrees.

\n" ); document.write( "PROVED

\n" ); document.write( "
\n" ); document.write( "
\n" );