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 : Line bar(AB) is the same as line bar(BA ) .

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

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 }

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

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

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

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 statement are true or false. Temperature is related to hoe fast the atoms within a substance are moving.