Sometimes while working you model like this.
But then you realize that you need something like this.
So you can quickly change the extrude direction and get the required result.
But wait, there is another option too and I call it Flip-O-Flip
Let’s try it.
1. Right click or click on the sketch you want to Flip. In this case my sketch is on Top plane.
2. Select any other plane from the list.
3. I’ve selected Front Plane.
4. The feature changes accordingly.
5. Now repeat edit sketch plane again on the same sketch.
6. Select the original sketch plane. In this case it was the Top plane.
7. Here is the result.