Question

What is the sum of inner and outer triangles of a polygon at one vertex. (90°, 180°, 360°​

Answer 1

Step-by-step explanation:

Answer: The sum of the internal angle and the external angle on the same vertex is 180°.

Answer 2

The sum of the internal angle and the external angle on the same vertex is 180°. The sum of all the internal angles of a simple polygon is 180(n–2)°, where n is the number of sides.