Class 7 Maths Chapter 5 Exercise 5.1 Pdf Notes NCERT Solutions

Class 7 Maths Chapter 5 Lines And Angles Exercise 5.1 pdf notes:-

Class 7 Maths Chapter 5 Exercise 5.1 Pdf Notes

Exercise 5.1 Class 7 maths Chapter 5 Pdf Notes:-

To see video Solution Of This Exercise Click Here

Ncert Solution for Class 7 Maths Chapter 5 Lines And Angles Exercise 5.1 Tips:


A line segment has two end points.

points. If we extend the two end points in either
direction endlessly, we get a line. Thus, we can say that a line has no end points. On the other
hand, recall that a ray has one end point

Again recall that an angle is formed when lines or line segments meet.When the sum of the measures of two angles is 90°, the angles are called complementary

pairs of angles are called supplementary angles.
When two angles are supplementary, each angle is said to be the supplement of the other.

The angles in a linear pair are supplementary.
Have you noticed models of a linear pair in your environment?
Note carefully that a pair of supplementary angles form a linear pair when
placed adjacent to each other. Do you find examples of linear pair in your daily life?Observe a vegetable chopping board

We conclude that when two lines intersect, the vertically opposite angles so
formed are equal.


1.We recall that (i) A line-segment has two end points.

(ii) A ray has only one end point (its initial point); and
(iii) A line has no end points on either side.

2.When two lines l and m meet, we say they intersect; the meeting point is called the
point of intersection.
When lines drawn on a sheet of paper do not meet, however far produced, we call
them to be parallel lines.

4.(i) When two lines intersect (looking like the letter X) we have two pairs of opposite
angles. They are called vertically opposite angles. They are equal in measure.
(ii) A transversal is a line that intersects two or more lines at distinct points.
(iii) A transversal gives rise to several types of angles.

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