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# CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes

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## CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes

If you are looking forward to scoring excellent marks in your Class 7 Maths Exams then it becomes very significant to understand the importance of Revision. Revision is very important as it helps you remember all the important chapters and co-related concepts that you have learned earlier and for the purpose of Revision, Revision Notes are always considered the best as they make your learning easy and convenient.

Chapter 5 of CBSE Class 7 Maths is Lines and Angles. Swiflearn offers the best and most reliable CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes that will make students understand all the important topics & concepts of this chapter and will help them in higher studies also. Free CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes provided here are prepared under the auspices of our Excellent Teachers keeping in mind the latest CBSE guidelines.

CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes are one of the most important pieces of study material that students can use as it will make their learning convenient and will also save them a lot of time. Students can download CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes in PDF format, use them to revise all their previously learned concepts, and hence score better in their exams. ## Lines and angles

Point

Point is an element of geometry that has no dimension.

Line

A line is a straight path with no endpoints.

Line has one dimension.

Line segment

A straight path restricted between two endpoints.

Ray

A ray is endless from one side and restricted from the other side with an endpoint.

Intersecting line

If two distinct lines meet or cross at a point they are called intersecting lines.

Parallel lines

Parallel lines are the lines that are at same distance apart from each other and never intersect anywhere in a plane.

Traversal line

If a line intersects two or more lines at different points it is called traversal line

Angle

It is made up of two rays which are starting from a common point.

Acute Angle

The measure of an acute angle is smaller than 90o.

Obtuse Angle

An Obtuse angle is more than 90 degrees but is less than 180 degrees.

Right Angle

An angle of 90 degrees is called a right angle.

Straight Angle

An angle of 180 degrees forms a straight angle. Such an angle is formed by a straight line.

Reflex Angle

An angle that measures more than 180 degrees but less than 270 degrees is called a reflex angle.

Full Angle

A full angle is an angle that is 360 degrees.

Complementary Angle

If the sum of two angles is 90° then they are called complementary angles.

Example: 30o, 60o

Supplementary Angle

If the sum of two angles is 180° then they are called complementary angles.

Example: 100°, 20°

When two placed next to each other they are called Adjacent angles.

It has a common vertex and a common arm.

### CBSE Class 7 Maths Chapter 5 Lines and Angles Revision Notes PDF 