It is a scalene triangle other than a right angle triangle
It is an obtuse triangle
An isosceles triangle has two equal side and angle measurements.
Each exterior angle measures 120 degrees
It will be a right angled triangle with angles of 90, 72 and 18 degrees.
60
It is a scalene triangle other than a right angle triangle
A right angle triangle or an isosceles triangle.
To circumscribed a circle about a triangle you use the angle. This is to get the right measurements.
It is an obtuse triangle
i depends of the lengths of the sides
An isosceles triangle has two equal side and angle measurements.
Each exterior angle measures 120 degrees
It will be a right angled triangle with angles of 90, 72 and 18 degrees.
Those wouldn't be angle measurements, they would be sides. A triangle could be constructed with sides of those lengths.
use a protractor.
This would depend on if you use the segment's endpoints on the triangle with the vertex of the triangle to get the angle.