In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain. These segments are called its edges or …

2018年4月2日 · In a regular 21-gon, all interior angles are equal, so we can find out the measure of one of these angles by dividing 3420 by 21: 3420 21 ≈ 162.86. The interior angle of a …

2022年4月28日 · What is the sum of angles in a 21 sided polygon? sum_of_interior_angles = (number_of_sides - 2) x 180° → if number_of_sides is 21: sum = (21 - 2) x 180° …

2015年5月13日 · Therefore, the sum of the measures of the interior angles of a 21-sided polygon is 342. For example, for a triangle (3-gon), the sum of the interior angles is ×. For a …

Find the measure of each interior angle of a regular 21-gon.-----Step 1, exterior angles = 360/21--The sum of exterior angles of all polygons is 360 degs---Step 2, interior angles = 180 - exterior …

2018年4月19日 · 162.86 On a regular polygon the exterior angle is found by dividing 360 by the number of sides. Then subtract this answer from 180 to find the interior angle. …

2024年5月31日 · Each interior angle of a regular 21-gon measures approximately 162.9 degrees when rounded to the nearest tenth. This is calculated by first finding the sum of the interior …

2022年10月30日 · What is the measure of an interior angle of a 21-gon? Concept: Define a 21-gon. A 21-gon is a 21 sided polygon also know as An icosikaihenagon. In the case of this …