Question

How do I solve this step by step

Answer 1

They are both drawn as right angled triangles so if we can constract them then they should obey pythagoras theorem 

First traingle:- 8^2 = 64   
                       7^2 + 6^2  =  49 + 36  =  85   so this does not obey the theorem and you cant draw it.

Second traingle: 9^2 = 81  and  5^2 + 7^2  =  25 + 49  =  75 so we cant draw that one either.