k guys im dishing out some questions help me with the ones you know pls. Which is a description of an undefined term?
The distance along a line segment is the number of units between two points.
Perpendicular lines are lines that intersect at a right angle.
A ray extends infinitely in one direction from an endpoint.
An angle is the figure formed by the intersection of two rays at a common endpoint.
2.Which mathematical term cannot be defined for all cases in a system of geometry?
parallel lines
midpoint of a line segment
distance along an arc
diameter of a circle
on a 50 min tim

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