
To circumscribe is to draw a
circle
around a
2dimensional
object or a
sphere
around a 3dimensional object that
intersects
all the
vertices of the figure,
but does not intersect any side.^{[1]}
A geometric figure is circumscribable if a circle can be
drawn that intersects all the vertices of the figure, but not does not intersect
any side.
To inscribe is to draw a circle or sphere that is completely
inside another figure that intersects each side of the figure exactly once.^{[2]}
To use the manipulatives, click on the blue points and drag them. This will change the figures. 

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