: Why are rounded corners in InDesign not perfectly round? At first glance, everything looks fine... Circle is 2p and square behind has rounded corners of 1p but if the stroke is removed, there

@Samaraweera207

Probably because neither the rounded corners nor the circles are true mathematically perfect arcs/circles.

Applications like InDesign, Illustrator and others that are used for vector graphics, use Bézier curves to approximate arcs/circles. They are close, but not perfect.

Also another thing is that transitions from a straight line into a sudden arc can sometimes look a bit odd - so there may some smoothing of the curves going on, to make the transition less extreme, so that it's more pleasing to the eye.

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