These angles are referred to as the base angles even though the orientation of the triangle can mean they are not at the bottom of the diagram. The different angle is referred to as the vertex angle.

Let’s calculate missing angle a. You can see from the diagram that one of the angles is 100º. You can also see that the missing angle is greater than 100º. It is a reflex angle. A reflex ...

All it is is a device that measures the angle between two objects. The sextant makes use of two mirrors. With this sextant, one of the mirrors ( mirror A in the diagram) is half-silvered ...