Q1 of 26 Page 54

All angles in an 18-sided polygon are equal. How much is each outer angle?

We know that,

Sum of outer angles of any polygon = 360°


Sum of each exterior angle


Sum of each exterior angle of 18-sided polygon


More from this chapter

All 26 →
4

Compute all angles of each of the figures below:

 5

Prove that in any triangle, the outer angle at a vertex is equal to the sum of the inner angles at the other two vertices.

 2

The sides PQ, RS of the quadrilateral shown below are parallel. Compute all inner and outer angles of the quadrilateral.


 3

Draw a quadrilateral and mark any two outer angles. Is there any relation between the sum of these two and the inner angles at the outer two and the inner angles at the other two vertices?