CBSE Class 9 Mathematics Areas Of Parallelograms And Triangles VBQs

CBSE Class 9 Mathematics Areas Of Parallelograms And Triangles VBQs read and download in pdf. Value Based Questions come in exams for Mathematics in Class 9 and are easy to learn and helpful in scoring good marks. You can refer to more chapter wise VBQs for Class 9 Mathematics and also get latest topic wise very useful study material as per latest NCERT book for Class 9 Mathematics and all other subjects for free on Studiestoday designed as per latest Class 9 CBSE, NCERT and KVS syllabus and examination pattern

VBQ for Class 9 Mathematics Chapter 9 Areas Of Parallelograms And Triangles

Class 9 Mathematics students should refer to the following value based questions with answers for Chapter 9 Areas Of Parallelograms And Triangles in Class 9. These VBQ questions with answers for Class 9 Mathematics will come in exams and help you to score good marks

Chapter 9 Areas Of Parallelograms And Triangles VBQ Questions Class 9 Mathematics with Answers

 

AREAS OF PARALLELOGRAMSAND TRIANGLES
 
Question. A craft mela is organised by Welfare Association to promote the art and culture of tribal people. The pandal is to be decorated by usin string of bulbs all around the field. There are two options either to arrange it in a rectangular field ABEF or parallelogram ABCD with equal area.
                                                                                                     CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%201_0.PNG
(a) What shape of the field should be chosen to minimise the expense of bulb and why ?
 
(b) Which values are depicted here ?
 
Answer: (a) Rectangle as
 
Perimeter of rectangle < Perimeter of parallelogram
 
(b) Co-operation, helpfulness
 
Question. A plot is in the form of a parallelogram ABCD. Owner of this plot wants to build OLD AGE HOME, DISPENSARY, PARK and HEALTH CENTRE for elderly people as shown in the fig. P is a point on the diagonal BD.
                                                                                                  CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%202.PNG
(a) Prove that area alloted to old age home and dispensary is same.
 
(b) Which values are depicted here ?
 
Answer: (a) Join AC
 
Diagonals AC & BD of a | |gmABCD bisect at O.
 
AO = OC and BO = OD
 
In ΔAPC, PO is median ( Median divides a triangle in two triangles equal in area)
                                                                                 /CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%207.PNG
therefor,  ar (APO) = ar (CPO)                                        ........... (i)
 
In ΔADC,
 
DO is median
 
therefor  ar (ADO) = ar(DCO)                                        .......... (ii)
 
Adding (i) & (ii)
 
ar (APO) + ar (ADO) = ar (CPO) + ar (DCO)
 
ar (ADP) = ar (DPC)
 
(b) Helpfulness, happiness, cooperation
 
Question. There was a deserted land near a colony where people used to throw garbage. Colony people united to develop a pond in triangular shape as shown in the fig. The land is in the shape of | |gmABCD. In rest of the portion medicinal plants were grown. If area of parallelogram ABCD is 200 m2.
                                                                           CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%203.PNG
(a) Calculate the area where medicinal plants were grown.
 
(b) Which value is depicted here ?
 
Answer: (a) 100 sq. cm.
 
(b) Environmental protection, cooperation
 
Question. For ‘Sarva Shiksha Abhiyan’ a rally was organised by a school. Students were given triangular cardboard pieces to write slogans. They divided the triangular shape into three equal parts by drawingmedians as shown in fig.
                                                                         CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%204.PNG
(a) Prove that area (AGC) = area (AGB)
 
= area (BGC)
 
= 1/3 area (ABC)
 
(b) Which values are inculcated through this activity ?
 
Answer: (a) In ΔABC, AD is median
 
ar ( ΔABD) = ar ( ΔADC) ______ (i)
 
also ar ( ΔGBD) = ar (GDC) ______ (ii)
 
subtracting (ii) from (i)
 
ar ( ΔAGB) = ar ( ΔAGC)
 
similarly
 
ar (AGB) = ar (AGC) = ar (GBC)
 
(b) Cooperation, sincerity
 
Question. A farmer has a square plot of land where he wants to grow five different crops at a time. On half of the area in the middle he wants to grow wheat but in rest four equal triangular parts he wants to grow different crops.
 
(a) Explain by diagram how he can divide the area to fulfill his purpose.
 
(b) By using this crop pattern which values are depicted by the farmer?
 
Answer: (a)
 
                                                CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%208.PNG
joining midpoints of sides
 
(b) Increases fertility of soil, environmental protection, happiness.
 
Question. There is a plot in a village in the shape of a quadrilateral ABCD. Sarpanch wants to get floor cemented so as to use it for social gatherings and panchayat meetings. Later due to construction of park in the neighbourhood for children they decided to change the shape to triangle ABP. If AC | | DP
                                                                    CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%205.PNG
Answer: (a) Since AC || DP
 
ar (ADC) = ar (APC) ..............(i)
 
( triangles on the same base AC and between same parallels AC & DP are equal in area)
 
Adding ar (ΔABC) to both sides of (i)
 
ar (ADC) + ar (ABC) = ar (APC) + ar (ABC)
 
ar (ABCD) = ar (ABP)
 
(b) Environmental protection, respecting others views
 
Question. On National Integration day a poster is to bemade by class IX students of a school. This poster is in the shape of a parallelogram. All religions
should be given equal triangular space to display their teachings.
 
(a) How will they divide a parallelogram into four triangles equal in area ? Justify it.
 
(b) What are the values depicted here ?
 
Answer:  (a) Diagonals of a | | gm divides it into four triangles of equal area.
 
(b) Unity of nation, co-operation, fraternity
 
Question. In a class, teacher gave two identical carboard pieces which are in the shape of a parallelogram to two groups. First group was asked to find
area of parallelogramusingAB as base. Then another group was askedto find height (h) of the parallelogram with AD as base.
                                                CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%206.PNG
(a) How will they find value of h ?
 
(b) What are the values involved here ?
 
Answer: (a) Area of | |gm ABCD
 
AB×DH = AD×BP
 
8×3 = 5×h
 
8×/5 3= h
 
24/5=h
 
h = 4.8 cm.
 
(b) Scientific temper, cooperation
 
Question. In a class, teacher asks the students to cut a figure from a given parallelogram which has area equal to half the area of parallelogram ABCD. Sunita joins the mid points of opposite sides of parallelogram as shown in the fig
                                                                              CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%209.PNG
Where as Rohan draws a triangle on the same base as shown in fig.
                                                                          CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%2010.PNG
(a) State whether two answers are correct. Justify.
 
(b) What values are depicted from this activity ?
 
Answer: (a) Both are giving correct answer.
 
(b) Scientific temper, curiosity, co-operation.
 
 
Question. In a rhombus ABCD, AC = 8 cm, then AO = 4 cm.
                                                                      CBSE%20Class%209%20VBQs%20Areas%20Of%20Parallelograms%20and%20Triangles%2011.PNG
The statement shows
 
(a) Truth value                                        (b) Social value
(c) Environment value                            (d) Cooperation
 
Justify your answer.
 
Answer: (a) Truth value
 
Chapter 01 Number System
CBSE Class 9 Mathematics Number System VBQs
Chapter 02 Polynomials
CBSE Class 9 Mathematics Polynomials VBQs
Chapter 03 Coordinate Geometry
CBSE Class 9 Mathematics Coordinate Geometry VBQs
Chapter 04 Linear Equations In Two Variables
CBSE Class 9 Mathematics Linear Equations VBQs
Chapter 08 Quadrilaterals
CBSE Class 9 Mathematics Quadrilaterals VBQs
Chapter 09 Areas Of Parallelograms And Triangles
CBSE Class 9 Mathematics Areas Of Parallelograms And Triangles VBQs
Chapter 10 Circles
CBSE Class 9 Mathematics Circles VBQs
Chapter 11 Constructions
CBSE Class 9 Mathematics Construction VBQs
Chapter 13 Surface Areas and Volumes
CBSE Class 9 Mathematics Surface Areas And Volume VBQs
Chapter 14 Statistics
CBSE Class 9 Mathematics Statistics VBQs
Chapter 15 Probability
CBSE Class 9 Mathematics Probability VBQs
VBQs for Class 9 Mathematics
CBSE Class 9 Mathematics Value Based Questions

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CBSE Class 9 Mathematics Chapter 9 Areas Of Parallelograms And Triangles VBQs

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CBSE VBQs Mathematics Class 9 Chapter 9 Areas Of Parallelograms And Triangles

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