1 Marks Question

Question 11 Mark

Is it possible to construct a triangle with lengths of its sides as given below? Give reason for your answer. $3\ cm, 4\ cm, 8\ cm$

Answer

No, because the sum of two sides of a triangle is not greater than the third side. $3 + 4 < 8$

Question 21 Mark

Is it possible to construct a triangle with lengths of its sides as given below? Give reason for your answer. $10\ cm, 5\ cm, 6\ cm$

Answer

Yes, because the sum of two sides of a triangle is greater than the third side. $5 + 6 > 10; 10 + 6 > 5; 5 + 10 > 6$

Question 31 Mark

Is it possible to construct a triangle with lengths of its sides as given below? Give reason for your answer. $5\ cm, 4\ cm, 9\ cm$

Answer

No, because the sum of two sides of a triangle is not greater than the third side. $5 + 4 = 9$

Question 41 Mark

Is it possible to construct a triangle with lengths of its sides as given below? Give reason for your answer.
$2.5\ cm, 5\ cm, 7\ cm$

Answer

Yes, because the sum of two sides of a triangle is greater than the third side.
$2.5 + 5 > 7; 5 + 7 > 2.5; 2.5 + 7 > 5$

Question 51 Mark

Is it possible to construct a triangle with lengths of its sides as given below? Give reason for your answer.
$8\ cm, 7\ cm, 4\ cm$

Answer

Yes, because the sum of two sides of a triangle is greater than the third side.
$7 + 4 > 8; 8 + 7 > 4; 8 + 4 > 7$

MATHS 1 Marks Question