Give all the important terms and their definition and also very important notes of chapter 5 lines and angles ( Maths ) Class 7 .
Answers
The topics and subtopics covered in lines and angles class 7 are:
Introduction
Related Angles
Complementary angles
Supplementary angles
Adjacent angles
Linear pair
Vertically opposite angles
Pairs of Lines
Intersecting lines
Transversal
Angles made by the transversal
Transversal of Parallel Lines
Checking for Parallel LinesTo cover Lines and Angles Class 7 syllabus, we have generalized the topics here. Read the below topics one by one to understand the concepts of lines and angles.
definitions:
Line:
A line is a straight figure which doesn’t have an endpoint and extends infinitely in opposite directions.
straight and curved line
Ray:
A ray is a straight line, which starts from a fixed point and moves in one direction.
Line Segment:
A portion of the line formed with two definite points is called a Line Segment. A line is a one-dimensional figure and has no thickness.
Angle:
When we join two line segments at a single point, an angle is formed, or we can say, an Angle is a combination of two line segments at a common endpoint. This common point is called Vertex of the angle and the two line segments are sides or arms of the angle formed.
Types of Angles
There are basically 6 types of angles which are:
Acute Angle: If an angle is less than 90 degrees, then it is called an Acute angle
Obtuse Angle: If an angle is more than 90 degrees, then it is called Obtuse Angle
Right Angle: If an angle is exactly at 90 degrees, then it is called Right Angle.
Straight Angle: If an angle is exactly 180 degrees, then it is called Straight Angle.
Reflex Angle: If the angle is more than 180 degree but less than 270 degrees, it is denoted as a Reflex angle.
Full Angle: A 360-degree angle is called a Full angle