Ncert solutions

Ncert solutions

Grade 7

The Triangle and its properties | Exercise 6.4

Question 1

Q1) Is it possible to have a triangle with the following sides?

(i) 2 cm, 3 cm, 5 cm

(ii) 3 cm, 6 cm, 7 cm

(iii) 6 cm, 3 cm, 2 cm

Solution 1:

(i) 2+3>5\ \ No

2+5>3\ \ yes

3+5>2\ yes

this triangle is not possible.

(ii) 3+6>7\ yes

6+7>3\ yes

3+7\ >6\ yes

this triangle is possible

(iii) 6+3>2\ yes

6+2>3\ yes\

2+3>6\ \ no\

this triangle is not possible

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subject-cta

Question 1

Q1) Is it possible to have a triangle with the following sides?

(i) 2 cm, 3 cm, 5 cm

(ii) 3 cm, 6 cm, 7 cm

(iii) 6 cm, 3 cm, 2 cm

Solution 1:

(i) 2+3>5\ \ No

2+5>3\ \ yes

3+5>2\ yes

this triangle is not possible.

(ii) 3+6>7\ yes

6+7>3\ yes

3+7\ >6\ yes

this triangle is possible

(iii) 6+3>2\ yes

6+2>3\ yes\

2+3>6\ \ no\

this triangle is not possible

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