Which of the following has definite length?
(a) A line
(b) A line segment
(c) A ray
(d) None of these

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Solution

(b) A line segment has a definite length that can be measured by a ruler and, therefore, it can be drawn on a paper.

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Similar questions

Which of the following statements are true ?

(i) A line segment has no definite length.

(ii) A ray has no end point.

(iii) A line has a definite length.

(iv) A line $\leftrightarrow A B$ is the same as line $\leftrightarrow B A$ .

(v) A ray $\to A B$ is the same as ray $\to B A$ .

(vi) Two distinct points always determine a unique line.

(vii) Three lines are concurrent if they have a common point.

(viii) Two distinct lines cannot have more than one point in common.

(ix) Two intersecting lines cannot both be parallel to the same line.

(x) Open half-line is the same thing as ray.

(xi) Two lines may intersect in two points.

(xii) Two lines are parallel only when they have no point in common.

Column I	Column II
(a) A line segment has a	(p) Infinitely many
(b) A ray $\underset{B A}{\to}$ has the end point	(q) definite length
(c) How many lines can pass through a given point?	(r) B
(d) How many lines can pass through two given points?	(s) Only one

\overset{\leftrightarrow}{A B}

\overset{\leftrightarrow}{B A}

\vec{A B}

\vec{B A}

\bar{A B}

\bar{B A}

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