Question

The supplementary angle of $40$ degree is

Answer 1

Given angle is $40$ degree ,

Note:

Any two angles whose sum is $180$degrees are called supplementary angles.

Each angle is a supplement to the other angle.

If $x,y$ are supplementary angles then $x+y=180$ degrees .

So we get, $y=180-x$ ( Here, $y$ is called supplement of $x$ )

or

$x=180-y$ ( Here, $x$ is called supplement of $y$ )

Therefore,

Supplementary of $40$ degrees $=$$180-40$$=$$140$ degrees.

Hence, the answer is $140$ degrees.