Question

three undefined terms in mathematics: i. point ii. line iii. plane the mathematical term parallel lines explicitly uses the undefined term(s) dropdown. the mathematical term perpendicular lines explicitly uses the undefined term(s) dropdown. the mathematical term line segment explicitly uses the undefined term(s) dropdown.

Explanation:

Parallel lines are lines in a plane that never meet, so they use the undefined term 'line'. Perpendicular lines are two lines that intersect at a right - angle, using the undefined term 'line'. A line segment is a part of a line with two endpoints, using the undefined term 'line' and 'point'.

Answer:

The mathematical term parallel lines explicitly uses the undefined term(s): Line
The mathematical term perpendicular lines explicitly uses the undefined term(s): Line
The mathematical term line segment explicitly uses the undefined term(s): Line, Point