Question

Question 2 In which of the
options given below, are the measurements
written from which a triangle can be
constructed?
पहला कोण -85 डिग्री, दूसरा कोण 115 डिग्री और भुजा
5.5 First angle -85 degree, second angle 115
degree and side 5.5
पहली भुजा 3.5cm, दूसरी भुजा 3.5 cm और तीसरी
भुजा 4.5cm First side 3.5cm, second side
3.5cm and third side 4.5cm
पहला कोण-60 डिग्री, दूसरा कोण 120 डिग्री और भुजा
3.5 First angle -60 degree, second angle 120
degree and side 3.5
पहली भुजा 2cm, दूसरी भुजा 2cm और तीसरी भुजा 2​

Answer 1

Answer:

Ans-10.5 cm ok thank you

Answer 2

Given :  Sides and angles of triangle

To Find : which measurements can be used to make triangle

First angle -85 degree, second angle 115 degree and side 5.5

First side 3.5cm, second side 3.5cm and third side 4.5cm

First angle -60 degree, second angle 120 degree and side 3.5

पहली भुजा 2cm, दूसरी भुजा 2cm और तीसरी भुजा 2​ cm

Solution:

concept to be used :

Sum of angles of triangle is 180°

Sum of any two sides of triangle > third side

First angle -85 degree, second angle 115 degree and side 5.5

115 + 85 = 200 > 180 hence triangle not possible

First side 3.5cm, second side 3.5cm and third side 4.5cm

3, 5 + 3.5 > 4

3.5 + 4  > 3.5

Hence triangle is possible

First angle -60 degree, second angle 120 degree and side 3.5

60 + 120 = 180  sum of two angles is 180 deg so no scope for third angle

Hence triangle not possible

पहली भुजा 2cm, दूसरी भुजा 2cm और तीसरी भुजा 2​ cm

possible this is just an equilateral triangle

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