1. If AB=5 BC=4 CA=3 are the measures of the lengths of the sides then ABC is a right triangle with AB as hypotenuse.
2. It's this statemant: CB is going with the angel of 200 degrees which I don't understand. To determine an angle you need:
- three points
- two straight lines
- an arc
- two curves
Please tell us exactly where this angle of 200° is to be found. Maybe you can provide us with a sketch(?)