Study MaterialsNCERT SolutionsNCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2

NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2

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NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2

 

NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Exercise 10.2
Ex 10.2 Class 7 Maths Question 1.
Construct ∆XYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm.
Solution:
Steps of construction:
(i) Draw XY = 4.5 cm.
(ii) Draw an arc with centre Y and radius 5 cm.
(iii) Draw another arc with centre X and radius 6 cm to meet the first arc at Z.
(iv) Join ZY and ZX.
(v) XYZ is the required triangle.
NCERT Solutions for Class 7 Maths Practical Geometry Ex 10.2 1
Using SSS criterion

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    Ex 10.2 Class 7 Maths Question 2.
    Construct an equilateral triangle of side 5.5 cm. Solution: Steps of construction:
    (i) Draw BC = 5.5 cm.
    (ii) Draw two arcs with centres B and C and same radius of 5.5 cm to meet each other at A.
    (iii) Join AB and AC.
    (iv) ABC is the required triangle.
    NCERT Solutions for Class 7 Maths Practical Geometry Ex 10.2 2
    Using SSS criterion

    Ex 10.2 Class 7 Maths Question 3.
    Draw ∆PQR with PQ = 4 cm, QR = 3.5 cm and PR = 4 cm. What type of triangle is this?
    Solution:
    Steps of construction:
    (i) Draw QR = 3.5 cm.
    (ii) Draw two arcs with centre Q and R and same radius of 4 cm to meet each other at P.
    NCERT Solutions for Class 7 Maths Practical Geometry Ex 10.2 3
    (iii) Join PQ and PR.
    (iv) PQR is the required triangle.
    (v) Since PQ = PR = 4 cm, therefore APQR is an isosceles triangle.
    Using SSS Criterion

    Ex 10.2 Class 7 Maths Question 4.
    Construct ∆ABC such that AB = 2.5 cm, BC = 6 cm and AC = 6.5 cm. Measure ∠B.
    Solution:
    Steps of construction:
    (i) Draw BC = 6 cm.
    (ii) Draw two arcs with centres B and C and radius 2.5 cm and 6.5 cm respectively to meet each other at A.
    (iii) Join AB and AC.
    (iv) ABC is the required triangle.
    [Using SSS criterion] NCERT Solutions for Class 7 Maths Practical Geometry Ex 10.2 4

    NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2 Q1

    NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2 Q2

    NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2 Q2.1

    NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2 Q3

    NCERT Solutions for Class 7 Maths Chapter 10 Practical Geometry Ex 10.2 Q4

     

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