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CBSE Class 9 Answered

If a straight line falling on two straight line makes the interior angles on the same side of it,whose sum is 120°,then the two straight lines,if produced indefinitely meet on the side on which the sum of angles is less than 120°.is it true
Asked by ABHILASHA | 21 Jan, 2018, 09:25: PM
answered-by-expert Expert Answer
AC is the line drawn to BE and DF
x and y are angles interior to line
now in order to meet line BE and DF, we need to form a triangle 
now if we consider line AB and CD it won't meet since
base angles sum is greater than 180...(x+y=120....given) 
so it will intersect only on AE and CF side
since base angles x+y=120 less than 180
the two straight lines, if produced indefinitely meet on the side on
which the sum of angles is less than or equal to 120°
Answered by Arun | 22 Jan, 2018, 05:49: PM

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