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# In the given figure, $\angle 1$ and $\angle 2$ are supplementary angles.

If $\angle 1$ is decreased

**Given:**

$\angle 1$ and $\angle 2$ are supplementary angles.

**To do:**

We have to find the changes that should take place in $\angle 2$ so that both the angles still remain supplementary when $\angle 1$ is decreased.

**Solution:**

$\angle 1+\angle 2=180^{\circ}$

If $\angle 1$ is decreased by some degrees, then $\angle2$ must be increased by the same value so that the two angles remain supplementary.

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