AP Board Class 7 Maths Chapter 4 Lines and Angles Unit Exercise Textbook Solutions PDF: Download Andhra Pradesh Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise Book Answers ~ HSSlive: Plus One & Plus Two Notes & Solutions for Kerala State Board

AP Board Class 7 Maths Chapter 4 Lines and Angles Unit Exercise Textbook Solutions PDF: Download Andhra Pradesh Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise Book Answers

AP Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks Solutions and answers for students are now available in pdf format. Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Book answers and solutions are one of the most important study materials for any student. The Andhra Pradesh State Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise books are published by the Andhra Pradesh Board Publishers. These Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise textbooks are prepared by a group of expert faculty members. Students can download these AP Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise book solutions pdf online from this page.

Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks Solutions PDF

Andhra Pradesh State Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise Books Solutions with Answers are prepared and published by the Andhra Pradesh Board Publishers. It is an autonomous organization to advise and assist qualitative improvements in school education. If you are in search of AP Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Books Answers Solutions, then you are in the right place. Here is a complete hub of Andhra Pradesh State Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise solutions that are available here for free PDF downloads to help students for their adequate preparation. You can find all the subjects of Andhra Pradesh Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks. These Andhra Pradesh State Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks Solutions English PDF will be helpful for effective education, and a maximum number of questions in exams are chosen from Andhra Pradesh Board.

Andhra Pradesh State Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Books Solutions

Board	AP Board
Materials	Textbook Solutions/Guide
Format	DOC/PDF
Class	7th
Subject	Maths
Chapters	Maths Chapter 4 Lines and Angles Unit Exercise
Provider	Hsslive

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AP Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks Solutions with Answer PDF Download

Find below the list of all AP Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:

Question 1.
Find the complementary, supplementary and conjugate angle of 36°.
Answer:
Complementary angle of 36° is 90° – 36° – 54°
Supplementary angle of 36° is 180° – 36° = 144°
Conjugate angle of 36° is 360° – 36° = 324°

Question 2.
Observe the figure and write any 4 pairs of adjacent angles.

Answer:
Adjacent angle of ∠AOB is ∠BOC.
Adjacent angle of ∠BOC is ∠COD.
Adjacent angle of ∠COD is ∠DOE.
Adjacent angle of ∠DOE is ∠EOF.

Question 3.
In the given figure the lines l and m intersect at O. Find x.

Answer:
Given l and m intersecting at O.
x° + 40° = 120° (vertically opposite angles)
x + 40° – 40°= 120° – 40°
∴ x = 80°

Question 4.
In the given figure 𝐀𝐄⎯⎯⎯⎯⎯⎯⎯⎯ is a straight line. If the ratio of angles ∠1, ∠2, ∠3, ∠4 in the given figure is 1:2 :3 : 4, then find the angles.

Answer:
Given 𝐀𝐄⎯⎯⎯⎯⎯⎯⎯⎯ is a straight line.
Ratio of angles ∠1, ∠2, ∠3, ∠4 is 1 : 2 : 3 : 4 that is 1x: 2x: 3x: 4x

The sum of the angles at a point on the same side of the line is 180°
∠1 + ∠2 + ∠3 + ∠4 = 180°
⇒ 1x + 2x + 3x + 4x = 180°
⇒ 10x = 180
⇒ 10𝑥10=18010
∴ x = 18°
2x = 2 × 18° = 36°
3x = 3 × 18° = 54°
4x = 4 × 18° = 72°
Therefore the angles are 18°, 36°, 54°, 72°.

Question 5.
Write any two examples for linear pair of angles in your surroundings.
Answer:
Electric pole, Tree/Pen stand, etc.

Question 6.
Mani said, “Two obtuse angles can form a pair of conjugate angles.” Do you agree? Justify your answer.
Answer:
Obtuse angle is always less than 180°. Sum of two obtuse angles is less than 360°.
So, I do not agree, that two obtuse angles cannot form a pair of conjugate angles.

Question 7.
Draw a pair of adjacent angles which are not supplementary to each other.
Answer:
(i)

∠AOB and ∠BOC are adjacent angles.
∠AOB + ∠BOC = 50° + 60°
= 110° ≠ 180°

∠AOB and ∠BOC are not supplementary.
(ii)

∠POQ and ∠QOR are adjacent angles.
∠POQ + ∠QOR = 70° + 80°
= 150° ≠ 180°
∠POQ and ∠QOR are not supplementary.

Question 8.
In the figure, if l ∥ m, t is a transversal. Find ∠1 and ∠2.

Answer:
Given l ∥ m and t is a transversal.
∠1 = 110° (vertically opposite angles)
∠1 + ∠2 = 180° (co-interior angles are supplementary)
110° + ∠2 = 180°
110° + ∠2 – 110° = 180° – 110°
∠2 – 70°
∠1 = 110° and ∠2 = 70°

Question 9.
A line p intersects two lines l and m at two distinct points. Observe the figure and fill in the blanks :

(i) The line ‘p’ is known as ________, ________
(ii) ∠1 and ∠5 is a pair of ________ angles.
(iii) ∠4 and ∠6 is a pair of ________ angles.
(iv) ∠3 and ∠6 is a pair of ________ angles.
Answer:
(i) transversal line,
(ii) corresponding
(iii) alternate interior
(iv) co-interior

Question 10.
In the given figure 𝐂𝐅−→−‖𝐁𝐃−→−,𝐁𝐄−→− is transversal. ∠CAE = 135°, then find ∠ABD

Answer:
Given CF−→‖BD−→− and BE−→ is transversal, ∠CAE — 135°
∠BAF = ∠CAE = 135° (vertically opposite angles)
∴ ∠BAF = 135°
∠BAF + ∠ABD = 180° (co-interior angles are supplementary)
135° + ∠ABD = 180°
135° + ∠ABD – 135° =180°- 135°
∴ ∠ABD = 45°

AP Board Textbook Solutions PDF for Class 7th Maths

Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks for Exam Preparations

Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbook Solutions can be of great help in your Andhra Pradesh Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise exam preparation. The AP Board STD 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Books State Board syllabus with maximum efficiency.

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How to get AP Board Class 7th Maths Chapter 4 Lines and Angles Unit Exercise Textbook Answers??

Students can download the Andhra Pradesh Board Class 7 Maths Chapter 4 Lines and Angles Unit Exercise Answers PDF from the links provided above.

Can we get a Andhra Pradesh State Board Book PDF for all Classes?

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