Hello.
When mapping features that supposed to have right angles (such as buildings), after you map them, you can right-click on it and select "Make Square" (or shortcut key Q) and it'll adjust the position of corners to make them all 90°. Doing that not only makes your mapping look neater and cleaner, but also changes the feature to more closely represent real life. 👍
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            Published using OSMCha: https://osmcha.org/changesets/149586584
            