NCERT Solutions for Class 7 Maths Exercise 6.2

NCERT Solutions for Class 7 Maths Exercise 6.2 book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 7 Maths chapter wise NCERT solution for Maths Book all the chapters can be downloaded from our website and myCBSEguide mobile app for free.

NCERT solutions for Maths Triangles and its Properties Download as PDF

NCERT Solutions for Class 7 Maths Triangles and its Properties

Class –VII Mathematics (Ex. 6.2)

Question 1.Find the value of the unknown exterior angle {tex}x{/tex} in the following diagrams:

Answer:

Since, Exterior angle = Sum of interior opposite angles, therefore

1. {tex}x = 50^\circ + 70^\circ = 120^\circ {/tex}
2. {tex}x = 65^\circ + 45^\circ = 110^\circ {/tex}
3. {tex}x = 30^\circ + 40^\circ = 70^\circ {/tex}
4. {tex}x = 60^\circ + 60^\circ = 120^\circ {/tex}
5. {tex}x = 50^\circ + 50^\circ = 100^\circ {/tex}
6. {tex}x = {60^ \circ } + {30^ \circ } = {90^ \circ }{/tex}

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NCERT Solutions for Class 7 Maths Exercise 6.2

Question 2.Find the value of the unknown interior angle {tex}x{/tex} in the following figures:

Answer:

Since, Exterior angle = Sum of interior opposite angles, therefore

1. {tex}x + 50^\circ = 115^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 115^\circ – 50^\circ = 65^\circ {/tex}
2. {tex}70^\circ + x = 100^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 100^\circ – 70^\circ = 30^\circ {/tex}
3. {tex}x + 90^\circ = 125^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 120^\circ – 90^\circ = 35^\circ {/tex}
4. {tex}60^\circ + x = 120^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 120^\circ – 60^\circ = 60^\circ {/tex}
5. {tex}30^\circ + x = 80^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 80^\circ – 30^\circ = 50^\circ {/tex}
6. {tex}x + 35^\circ = 75^\circ {/tex} {tex} \Rightarrow {/tex} {tex}x = 75^\circ – 35^\circ = 40^\circ {/tex}

NCERT Solutions for Class 7 Maths Exercise 6.2

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