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Mathematics 13 Online
OpenStudy (anonymous):

Which of the following is not an undefined term of geometry? Plane Line Segment Point

OpenStudy (mertsj):

Look at you list of definitions and see which answer choice is there.

OpenStudy (anonymous):

the answer choices are plane, line,segment or point

OpenStudy (anonymous):

i dont know which one it is though

jimthompson5910 (jim_thompson5910):

hint: one of these is defined by the other terms

OpenStudy (anonymous):

i honestly dont know im really bad with geometry

OpenStudy (anonymous):

please help me

jimthompson5910 (jim_thompson5910):

this page explains what undefined terms are (and lists them). There are only 3 of them http://www.regentsprep.org/Regents/math/geometry/GG1/undefinedterms.htm

OpenStudy (anonymous):

thank you so much!

jimthompson5910 (jim_thompson5910):

from that page, we see a: point, line, and plane the explanations and descriptions are given for each

jimthompson5910 (jim_thompson5910):

so the line segment is the only thing not undefined basically it's defined with the help of the undefined terms: point, line

jimthompson5910 (jim_thompson5910):

a line segment is formed by 2 distinct points that are not the same and these two points are connected with a straight line a line segment is finitely long (ie ends at some point)

OpenStudy (anonymous):

intersecting lines are parallel

OpenStudy (anonymous):

is it always, sometimes, never or not enough info

jimthompson5910 (jim_thompson5910):

what is the definition of parallel?

jimthompson5910 (jim_thompson5910):

what does it mean when you have parallel lines?

OpenStudy (anonymous):

when theyre the same length and size

jimthompson5910 (jim_thompson5910):

that's congruent

OpenStudy (anonymous):

so it cant be parallel

jimthompson5910 (jim_thompson5910):

think train tracks

jimthompson5910 (jim_thompson5910):

the metal rails of train tracks

OpenStudy (anonymous):

yeah thats parallel

OpenStudy (anonymous):

but can intersecting lines be parallel?

jimthompson5910 (jim_thompson5910):

parallel means that two lines don't intersect http://www.mathsisfun.com/geometry/parallel-lines.html

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