RS Aggarwal Class-7 Lines and Angles ICSE Maths Goyal Brothers

RS Aggarwal Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan Chapter-17 Solutions. We provide step by step Solutions of Exercise / lesson-17 Lines and Angles for ICSE Class-7 RS Aggarwal Mathematics.

Our Solutions contain all type Questions with Exe-17 A, Exe-17 B, Exe-17 C, MCQs Exe-17 D with Mental Maths to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-7 Mathematics.

Board	ICSE
Publications	Goyal brothers Prakshan
Subject	Maths
Class	7th
Chapter-17	Lines and Angles
Writer	RS Aggrawal
Book Name	Foundation
Topics	Solution of Exe-17 A, Exe-17 B, Exe-17 C, MCQs Exe-17 D with Mental Maths
Academic Session	2021-2022

RS Aggarwal Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan Chapter-17 Solutions

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-: Select Topic :-

Exe-17 A,

Exe-17 B,

Exe-17 C,

MCQs Exe-17 D,

  Mental Maths

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Angle

When we join two line segment 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:

1. Acute Angle: If an angle is less than 90 degrees, then it is called an Acute angle
2. Obtuse Angle: If an angle is more than 90 degrees, then it is called Obtuse Angle
3. Right Angle: If an angle is exactly at 90 degrees, then it is called Right Angle.
4. Straight Angle: If an angle is exactly 180 degrees, then it is called Straight Angle.
5. Reflex Angle: If the angle is more than 180 degree but less than 270 degrees, it is denoted as a Reflex angle.
6. Full Angle: A 360-degree angle is called a Full angle.

Related Angles

Apart from this, the different angles are:

Complementary Angle: The sum of the measures of two angles is 90°

Supplementary Angle: The sum of the measures of two angles is 180°

Adjacent Angle: Adjacent angles have a common vertex and a common arm but no common interior points

Linear pair: A linear pair is a pair of adjacent angles whose non-common sides are opposite rays

Vertically Opposite Angles: when two lines intersect, the vertically opposite angles so formed are equal

Angles made by the transversal:

There are different angles formed when the transversal cuts the lines. They are:

• Interior angles
• Exterior angles
• Pairs of Alternate interior angles
• Pairs of Alternate exterior angles
• Pairs of Corresponding angles
• Pairs of interior angles on the same side of the transversal

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Exe-17 A,

RS Aggarwal Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan

Page 176-177

Question 1:

Name each of the following angles:

(i)……..

(ii)……

(iii)……..

Question 2:

Classify each of the following ……………… reflex angle :

(i)……..

(ii)……

(iii)……..

(iv)……..

(v)……

(vi)……..

Question 3:

…………………

…………………

…………………

Question 13:

Two supplementary angles ……………………. Find the angles.

Question 14:

25 % of an angle ……………………. Find the angle .

Question 15:

………………….

……………………

Question 21:

Find an angle which is 5 degree more than four times its supplements.

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Exe-17 B,

 Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan

Page 179-181

See all figure in your text book.

Question 1:

In the given …………….. AOC.

Question 2:

In the given ……………….. Find

(i)…………..

(ii)………….

Question 3:

…………………

…………………

………………..

Question 11:

In the given ……………………… AOD.

Question 12:

In the given ………………. AOC.

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Exe-17 C,

Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan

Page 184-187

Question 1:

Two lines AB and CD are cut by a transversal EF, as shown in the figure.

………………………

…………………….

Question 2:

In the given ………………….. Give reason.

Question 3:

In each of the following ………….. in each case.

Question 4:

……………………….

………………………

……………………….

Question 17:

In each of the following figure two AB and CD are cut by a transversal EF.

…………….

…………………

…………………

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MCQs Exe-17 D,

 Class-7 Lines and Angles ICSE Maths Goyal Brothers Prakashan

Page 188

Choose the correct option in each of the following

Question 1:

The sum of all the angle at a point is …..

Question 2:

The sum ……………………….

Question 3:

………………..

………………….

…………………

Question 10:

In the given ………………………….

–: End of RS Aggarwal Class-7 Lines and Angles Solutions :–

Return to- RS Aggarwal Solutions for ICSE Class-7 Goyal Brothers Prakashan

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