Asked/Added Questions From NCERT:


Question 1. Asked on :13 January 2019:05:13:09 PM

 show that if sum of the two angles of a triangles is equal to the third angle is right triangle.


-Added by khushi chauhan Mathematics » Lines And Angles

Answer:

Himanshi Verma

 Let the first and second angle be a and b respectively 


Third angle = a+b


By angle sum property of triangle 

a +b + a+b = 180

=> 2a +2b = 180

=> 2(a+b) = 180

=> a+b = 90°

Third angle = 90°

-Answered by Himanshi Verma On 20 January 2019:05:07:15 PM


Question 2. Asked on :13 January 2019:04:58:17 PM

 In a ΔABC, ∠A+∠B=125º And ∠B+∠C=150º. Find all the angles of ΔABC.


-Added by Himanshi Verma Mathematics » Lines And Angles


 

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