Sum of interior angles of a Polygon = (n-2) X straight angle
- Pratima Nayak
The sum of interior angles of a Polygon can be found by using the formula: sum = ( n-2)X 180 degree. You can click on one box at a time. You can change the shape,angles by pressing and dragging the vertices with mouse cursor. Note the angles. Find the sum. Verify the formula.
Find the name of the polygon when number of sides are 8, 9 and 10. Find the sum of interior angles using the formula.