Concise Mathematics Class 6 ICSE Solutions for Chapter 25 - Properties of Angles and Lines (Including Parallel Lines)

Q: 1. What are angles types based on their value as taught in ICSE Class 6 Maths Chapter 25?

Types of Angles:Complete Angles An angle of the measure of 360°.Right Angle An angle of 90° is called a Right angle. It makes a quarter of rotation I.e. 1/4th of the circle.Straight Angle An angle of 180° is called a straight angle. It makes a half revolution.Acute Angles An acute angle is an angle that is less than 90°.Obtuse Angle An obtuse angle is the angle of an angle that is more than 90° but less than 180°.Reflex Angle A reflex angle is an angle that is more than 180°.

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Concise Mathematics Class 6 ICSE Solutions for Chapter 25 - Properties of Angles and Lines (Including Parallel Lines)

ICSE Class 6 Mathematics Chapter 25 Selina Concise Solutions - Free PDF Download

Updated ICSE Class 6 Mathematics Chapter 25 - Properties of Angles and Lines (Including Parallel Lines) Selina Concise Solutions are provided by Vedantu in a step-by-step method. Selina is the most famous publisher of ICSE textbooks. Studying these solutions by Selina Concise Mathematics Class 6 Solutions which are explained and solved by our subject matter experts will help you in preparing for ICSE exams. Concise Mathematics Class 6 ICSE Solutions can be easily downloaded in the given PDF format. These solutions for Class 6 ICSE will help you to score good marks in ICSE Exams 2019-20.

Properties of Angles and Lines at Glance

In this chapter, you are going to learn about the Properties of Angles and Lines.

Angles

Angel is formed when two rays meet each other. It is denoted by "∠".For example, if two rays A and B meet at point O, then we will call this angle ∠AOB or ∠BOA.

Properties of Angles:

The Sum of Angles on a Straight Line is always 180°.
Vertically Opposite Angles are Equal to each other.
Alternate Angles are Equal to each other.
The Sum of Co-interior angles is 180°.

Types of Angles:

1. Adjacent Angles

The two angles are adjacent if they are following any of these properties

If They will have a common vertex.
If They have one common arm.

2. Vertically Opposite Angles

The angles on the opposite side of the point of intersection are called vertically opposite angles.

3. Alternate Interior Angles

When two parallel lines are intersected by a transversal, then eight angles are formed there. The pair of interior angles which are between parallel lines and transversal are called interior angles.

4. Congruent Angles

The angles which are the same in measurement are called congruent angles.

Lines

A line is the endless one-dimensional geometrical figure which has no breadth.

Lines can be of different types:

Vertical Line.
Skew line.
Perpendicular linesHorizontal line.
Parallel line
Straight

Properties of Lines:

A line can be extended till infinity. It has no fixed length.
It can be extended in both directions.
Lines have an infinite number of points on them.
The line is a one-dimensional geometrical figure.
It has only length. It has no thickness.
The Distance between parallel lines always remains the same.

Types of Lines:

1. Intersecting Line

Two lines are said to be intersecting lines if they intersect each other at any point.

2. Parallel Lines

Two lines are called parallel lines if the distance between them always remains the same.

3. Transversal Lines

The line which intersects two parallel lines is called a transversal line.

4. Perpendicular Lines

Two lines are said to be perpendicular lines if they intersect each other at an angle of 90°.

FAQs on Concise Mathematics Class 6 ICSE Solutions for Chapter 25 - Properties of Angles and Lines (Including Parallel Lines)

1. What are angles types based on their value as taught in ICSE Class 6 Maths Chapter 25?

Types of Angles:

Complete Angles

An angle of the measure of 360°.

Right Angle

An angle of 90° is called a Right angle. It makes a quarter of rotation I.e. 1/4th of the circle.

Straight Angle

An angle of 180° is called a straight angle. It makes a half revolution.

Acute Angles

An acute angle is an angle that is less than 90°.

Obtuse Angle

An obtuse angle is the angle of an angle that is more than 90° but less than 180°.

Reflex Angle

A reflex angle is an angle that is more than 180°.

2. Do I need to practice all of the questions of Selina Concise Mathematics Class 6?

If you are preparing for the long term and have sufficient time to solve all these questions then it would be very beneficial for you. However, if the exams are coming then you should solve some selective questions. Always select those questions which are more conceptual and are common for exams. You can also revise some of the previous year's questions from this chapter to get better results in a short time.

3. How can I understand the integers chapter of Selina Concise Mathematics Class 6 well?

To understand this chapter of Selina Concise Mathematics of class 6 well, you just need to learn all the concepts well. Good command concepts can be a tool to get better results in. After learning all the concepts, you can make revision notes and can solve as many questions as you can do. It will surely enhance your capabilities

4. Is doing only these questions from Selina Concise Mathematics Class 6th enough?

All chapters are nearly equally important for the exam. So you have to keep a good command over concepts for better results. Doing as many questions as you can surely boost your confidence and knowledge. You can also pick up some of the previous year's questions and most important questions from the platform of Vedantu.

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