State whether the following statements are true or false :
Line `bar(AB)` is the same as line `bar(BA )`.

State whether the following statements are true or false : A ray bar(AB) is same as the ray bar(BA) .

State whether the following statements are true or false : A line has a definite length.

State whether the following statements are true or false : A ray has no end point.

State whether the following statements are true or false : Two lines may intersect in two points.

Examine whether the following statements are true or false: { a }∈ { a, b, c }

Examine whether the following statements are true or false: { a }⊂ { a, b, c }

Examine whether the following statements are true or false: { a, b } ⊄ { b, c, a }

State whether the following statements are true or false. a) Density is defined as the mass of the substance contained in unit volume.

State whether the following statements are true or false : Two intersecting lines cannot both be parallel to the same line.