# Angle Relationships in Triangles

- Author:
- Aaron Warner, Jenny Novak

- Topic:
- Triangles

Interior angles are shown in green. What is the sum of the interior angles?
Exterior angles are shown in red. What is the sum of the exterior angles?
Do you notice any other relationships among the interior and exterior angles? Hint: Consider the sum of any two of the three interior angles.
Move the vertices of the triangle. Are the relationships you noted preserved?