Hi i'm not sure what else I need to do to define this sketch
Maybe just couple construction lines and radius
Can you send the file, so I can look at it. I am thinking you do not need any more dimensions. But you do need some relations.
You need some symmetric relations
It's much quicker to draw one corner and construction lines, then do 2 mirrors. That way the symmetric relations are added automatically and you don't need any of the equal relationships
Drag any of the sketch segments and you will see what constraint is missing.
Temporarily fix a point. If it fully defines the sketch than you know you need to lock down any point of the sketch.
To fully define a sketch not only do you have to have dimensions on defining the length, width , and heights of the lines/arcs, but you also have to define it's location in space in relation to the front, top, and right planes, or the origin.
0,0,0 is the origin. So you need dims and or relations to that point to be able to define any sketch. Think about what you would need to be able to redraw that sketch to 100% accuracy and dimension away.
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