If the sides ab,bc,cd,da of a quadrilateral abcd are in descending order of magnitude show that angle cda > angle cba
Please help me with question 15. I have applied triangle inequality to every side possible but can't get a good equation.
If the sides ab,bc,cd,da of a quadrilateral abcd are in descending order of magnitude show that angle cda > angle cba
Please help me with question 15. I have applied triangle inequality to every side possible but can't get a good equation.
This image seems to present a counterexample...