What is the name of a polygon with 5 sides? (One is drawn below.)
Each interior angle of a regular polygon is 144°. How many sides does the polygon have?
A nonagon has all 9 sides equal in length and all 9 angles equal in size. Is it a regular or an irregular polygon?
Calculate the sum of the interior angles of a heptagon.
The sum of the interior angles of a polygon is 720°. How many sides does it have, and what is it called?
A hendecagon is drawn below. How many sides does it have?
Each exterior angle of a regular polygon is 30°. How many sides does the polygon have?
Each exterior angle of a regular polygon is 20°. How many sides does the polygon have?
Each exterior angle of a regular polygon is 36°. How many sides does the polygon have?
A triangle is drawn below. How many sides does it have?
Calculate the SUM of the interior angles of a pentadecagon (15 sides).
Calculate the sum of the interior angles of a nonagon.
