Another fusion 360 question

can someone tell me how to changae the plane of veiw (i may be calling that something different) all of a sundden when i click top veiw on to start my sketch it just shows a straight line and i hav ent changed anything. i have deleted fuaion 360 and redownloaded it but its still the same.

In the top right hand corner of your screen there is the navigation cube.
If you right click the navigation cube it’ll give you the option to change your orientation.

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