22. The sum of the interior angles regular polygon is 1440 . Find of a number of sides of the regife 23. A seven sided polygon is called (a) pentagon (b) heptagon hexagon (d) nonagon

To find the number of sides of a regular polygon with an interior angle sum of 1440 degrees, use the formula for interior angles, which is (n - 2) × 180 = 1440. By solving for n, you’ll find that n equals 10. So, this polygon has 10 sides, making it a decagon! A seven-sided polygon has a specific name, and it's called a heptagon. Just think of it this way: “hepta” means seven, like a heptathlon that includes seven events. So next time you see a heptagon, you'll know it’s a lucky seven in the world of shapes!