Not certain what you mean but try Google / involute curve , then click on the involute curve
the involute curve is the fundemantal shape of (amongst others) a spur gear tooth profile, generated from the gear base circle diameter.
Hypocycloid. from Wikipedia: "a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle."
a circle
No. A full angle is a segment of a line which goes to a vertex and returns along the same path. Any point on the line segment, other than the vertex, will trace out a circle but the angle itself is NOT a circle.
Technically you can not trace a sphere. If the base conditions are the same as for the other solid shapes, for example a cylinder, there is a base on which the cylinder rests, which creates the circle when it is traced. A sphere on a base would be touching in one point, which would be a dot. If you trace half a sphere, yes, than you do get a circle.
It is virtually impossible to trace a virus back to the point of origin
circle
a circle is 360 degrees. 1 5th = 360/5 = 72 degrees mark a starting point and draw a straight line and using a protractor find 72 degrees from that point and draw a line to that. now using a string or compass trace the arc between the 2 lines. You now have a wedge that is 1 5th of the circle.
One can draw a circle by finding a round object that is the perfect size and trace the circle. One can also use a compass or string to draw a circle.
Turning Point - 2000 Vanished Without a Trace was released on: USA: 12 October 2008
You take a point show and trace it after tracing it you can take the trace and ductape it to a mold!;)
A cylinder. A cone would be an acceptable answer too.
using a stick with two holes drilled in it. You can anchor one end with a pin through the hole, with a pencil in the other hole you can trace a circle. now move the anchor to the edge of the circle and trace another circle. Where these two circles intersect you can trace two more circles. now by connecting the points where the circles intersect with straight lines you will have several geometric shapes.