Mathematics, 14.05.2021 01:00 alishadautreuil
Let A be the set of all lines in the plane. Define a relation R on A as follows. For every l1 and l2 in A, l1 R l2 ⇔ l1 is parallel to l2. (Assume that a line is parallel to itself). Which of the following is true for R?
A. R is reflexive.
B. R is symmetric.
C. R is transitive.
D. R is neither reflexive, symmetric, nor transitive.
Answers: 1
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Let A be the set of all lines in the plane. Define a relation R on A as follows. For every l1 and l2...
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