Question

In the given figure, \(\angle \;1\) and \(∠  \;2\) are supplementary angles. 
If \(∠\;1\) is decreased, what changes should take place in \(∠\;2\) so that both the angles still remain supplementary?

Answer 1

if \(∠\;1 \) is decreased then, \(∠\;2\) will increase with the same measure, so that both the angles still remain supplementary.

Read more: Supplementary and Complementary Angles