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BSEB Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Solutions PDF: Download Bihar Board STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Book Answers

BSEB Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Solutions PDF: Download Bihar Board STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Book Answers
BSEB Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Solutions PDF: Download Bihar Board STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Book Answers


BSEB Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks Solutions and answers for students are now available in pdf format. Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Book answers and solutions are one of the most important study materials for any student. The Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 books are published by the Bihar Board Publishers. These Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 textbooks are prepared by a group of expert faculty members. Students can download these BSEB STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 book solutions pdf online from this page.

Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks Solutions PDF

Bihar Board STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Books Solutions with Answers are prepared and published by the Bihar Board Publishers. It is an autonomous organization to advise and assist qualitative improvements in school education. If you are in search of BSEB Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Books Answers Solutions, then you are in the right place. Here is a complete hub of Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 solutions that are available here for free PDF downloads to help students for their adequate preparation. You can find all the subjects of Bihar Board STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks. These Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks Solutions English PDF will be helpful for effective education, and a maximum number of questions in exams are chosen from Bihar Board.

Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Books Solutions

Board BSEB
Materials Textbook Solutions/Guide
Format DOC/PDF
Class 9th
Subject Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2
Chapters All
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BSEB Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks Solutions with Answer PDF Download

Find below the list of all BSEB Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:

BSEB Bihar Board Class 9th Maths Solutions Chapter 9 Areas of Parallelograms and Triangles Ex 9.2

Question 1.
In figure, ABCD is a parallelogram, AE ⊥ DC and CF ⊥ AD. If AB = 16 cm, AE = 8 cm and CF = 10 cm, find AD.

Solution:
We have,
Area of a ||gm = Base x Height
∴ Area of ||gm ABCD = AB x AE
= (16 x 8) cm² = 128 cm² … (1)
Also, Area of ||gm ABCD = AD x CF
I = (AD x 10) cm² … (2)
From (1) and (2), we get
128 = AD x 10
⇒ AD = 12810 cm = 12.8 cm.

Question 2.
If E, F, G and H are respectively the mid-points of the sides of a parallelogram ABCD, show that ar (EFGH) = 12ar(ABCD).
Solution:
A HGF and ||gm HDCF stand on the same base HF and lie between the same parallels HF and DC.

∴ ar(HEF) = 12 ar(ABFH) … (1)
Similarly, ∆ HEF and ||gm ABFH stand on the same base HF and lie between the same parallels HF and AB.
∴ ar(HEF) = 12 ar(ABFH) … (2)
∴ Adding (1) and (2), we get
ar(HGF) + ar(∆ HEF) = 12 [ar(HDCF) + ar(ABFH)]
⇒ ar(EFGH) = 12 ar(ABCD).

Question 3.
P and Q are any two points lying on the sides DC and AD respectively of a parallelogram ABCD. Show that ar(APB) = ar(BQC).
Solution:
∆ APB and ||gm ABCD stand on the same base AB and lie between the same parallels AB and DC.

∴ ar(APB) = 12 ar(ABCD) … (1)
Similarly, ∆ BQC and ||gm ABCD stand on the same base BO and lie between the same parallels BC and AD.
∴ ar(BQC) = 12 ar(ABCD)
From (1) and (2), we have
ar(APB) = ar(BQC).

Question 4.
In figure, P is a point in the interior of a parallelogram ABCD. Show that
(i) ar(APB) + ar(PCD) = 12 ar(ABCD)
(ii) ar(APD) + ar(PBC) = ar(APB) + ar(PCD).

Solution:
Draw EPF parallel to AB or DC and GPH parallel to AD or BC.

Now AGHD is a ||gm [∵ GH || DA and AG || DH]
Similarly, HCBG, EFCD and ABFE are parallelograms.
(i) ∆ APB and ||gm ABFE stand on the same base AB and lie between the same parallels AB and DC.
∴ ar(APB) = 12 ar(ABFE) … (1)
Similarly, ar(PCD) = 12 ar(EFCD)
Adding (1) and (2), we get
ar(APB) + ar(PCD) = 12 [ar(ABFE) + ar(EFCD)]
= 12 ar(ABCD) … (3)

(ii) ∆ APD and ||gm AGHD are on the same base AD and lie between the same parallels AD and HG.
∴ ar(APD) = 12 ar(AGHD) … (4)
Similarly, ar(PCB) = 12ar(GBCH) … (5)
Adding (4) and (5), we get
ar(APD) + ar(PCB) = 12 [ar(AGHD) + ar(GBCH)]
= 12 ar(ABCD) … (6)
From (3) and (6), we get
ar(APD) + ar(PBC) = ar(APB) + ar(PCD).

Question 5.
In figure, PQRS and ABRS are parallelograms and X is any point on side BR. Show that
(i) ar(PQRS) = 12 ar(ABJtS)
(ii) ar(AXS) = 12 ar(PQRS).

Solution:
(i) ||gm PQRS and ||gm ABRS stand on the same base RS and lie between the same parallels SR and PAQB.
∴ ar(PQRS) = ar(ABRS) … (1)

(ii) ∆ AXS and ||gm ABRS stand on the same base AS and lie between the same parallels AS and RB.
∴ ar(AXS) = 12 ar(ABRS) z
ar(AXS) = 12ar(PQRS) [Using (1)]

Question 6.
A farmer was having a field in the form of a parallelogram PQRS. She took any point A on RS and joined it to points P and Q. In how many parts the fields is divided? What are the shapes of these parts? The farmer wants to sow wheat and pulses in equal portions of the field separately. How should she do it?
Solution:
Clearly, the field i.e., ||gm PQRS is divided into 3 parts.

Each part is of the shape of triangle.
Since ∆ APQ and ||gm PQRS stand on the same base PQ and lie between the same parallels PQ and SR.

From (1) and (2), we get
ar(APS) + ar(AQR) = ar(APQ).
Thus the farmer should sow wheat and pulses either as [(∆s APS and AQR) or ∆ APQ] or as [∆ APQ or (∆s APS and AQR].


BSEB Textbook Solutions PDF for Class 9th


Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks for Exam Preparations

Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Solutions can be of great help in your Bihar Board Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 exam preparation. The BSEB STD 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Books State Board syllabus with maximum efficiency.

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How to get BSEB Class 9th Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Textbook Answers??

Students can download the Bihar Board Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.2 Answers PDF from the links provided above.

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Yes you can get Bihar Board Text Book PDF for all classes using the links provided in the above article.

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