The definition of a circle uses the undefined term _______.
3 lines are shown. One line has points B, A, and E. Line C, A, F intersects that line at point A. A line comes out of point A and goes through point D.





Which is the definition of a ray?
Which is a property of an angle?
Which defines a circle?
Vertical line q goes through plane H in the center at point X. Line t comes out of point X. Lines r and s are parallel and are at a right angle to line q. Line p goes through lines r and s.

Which figure represents an undefined term?




Which is defined using the undefined terms point and line?
Which undefined term is used to define an angle?
Which pair of undefined terms is used to define the term parallel lines?
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