# A polygon has n sides. Three of its exterior angels are 70 degrees, 80 degrees and 90 degrees. The remaining #(n-3)# exterior angels are each 15 degrees. How many sides does this polygon have?

##### 1 Answer

Mar 8, 2018

Polygon has

#### Explanation:

Sum of the exterior angles of any polygon is always

As three angles are

or

and

i.e.

Hence, polygon has