Interior Angle And Exterior Angle Of Triangle. The exterior angles taken one at each vertex always sum up to 360. An exterior angle of the triangle is the angle between one side of a triangle and the extension of an adjacent side.
Interior Angles Exterior And The Sum Polygon Worksheets. Exterior angle is defined as the angle formed between a side of triangle and an adjacent side extending outward. The triangle will also have exterior.
According to the exterior angle inequality theorem the measure of an exterior angle of a triangle is greater than either of its interior opposite angles.
The sum of the internal angle and the external angle on the same vertex is 180. Properties of Exterior Angles of a Triangle An exterior angle of a triangle is equal to the sum of the two opposite interior angles thus an exterior angle is greater than any of its two opposite interior angles. The proof of the property of the exterior angle of a triangle. As you can see from the picture below if you add up all of the angles in a triangle.