Match the following statements of column A and column B. Column A Column B (i) Points are collinear (i) may be parallel or intersecting (ii) Two lines in a plane (ii) if they lie on the same line (iii) Relation between points and lines (iii) can pass through a point (iv) Indefinite number of lines (iv) are undefined terms in geometry (v) Point, line and plane are (v) are called incidence properties

( i ) Points are collinear - Two points are said to be collinear if they lie on the same line. In the figure below, points A , F and B are collinear points. Hence, A ( i ) → B ( ii ) . ( ii ) Two lines in a plane - Two lines in a plane may be parallel or intersecting. Hence, A ( ii ) → B ( i ) . ( iii ) Relation between points and lines - In geometry, an incidence relation is a heterogeneous relation that captures the idea being expressed when phrases such as "a point lies on a line" are used. Therefore, relation between points and lines are called incidence properties. Hence, A ( iii ) → B ( v ) . ( iv ) Indefinite number of lines - We know that, A line and a point do not have any thickness. Therefore, indefinite number of lines can pass through a point. Hence, A ( iv ) → B ( iii ) . ( v ) Point, line and plane are - In geometry, formal definitions are formed using other defined words or terms. There are, however, three words in geometry that are not formally defined. These words are point, line and plane, and are referred to as the "three undefined terms of geometry". Hence, A ( v ) → B ( iv ) Hence, the matched columns are as follows: Column A Column B (i) Points are collinear (ii) if they lie on the same line (ii) Two lines in a plane (i) may be parallel or intersecting (iii) Relation between points and lines (v) are called incidence properties (iv) Indefinite number of lines (iii) can pass through a point (v) Point, line and plane are (iv) are undefined terms in geometry

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Tryout Maths A book on Mental Maths>Chapter 14 - Parallel Lines>Exercise>Q 5

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If two line segments do not intersect, they are parallel.

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Important Questions on Parallel Lines

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Tryout Maths A book on Mental Maths>Chapter 14 - Parallel Lines>Exercise>Q 5

If two rays do not intersect, they are parallel.

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Tryout Maths A book on Mental Maths>Chapter 14 - Parallel Lines>Exercise>Q 6

Match the following statements of column A and column B.

	Column A		Column B
(i)	Points are collinear	(i)	may be parallel or intersecting
(ii)	Two lines in a plane	(ii)	if they lie on the same line
(iii)	Relation between points and lines	(iii)	can pass through a point
(iv)	Indefinite number of lines	(iv)	are undefined terms in geometry
(v)	Point, line and plane are	(v)	are called incidence properties

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