213420A polygon has n sides. Two of its exterior angles are 21° and 54°. The remaining exterior angles area$$ 1 5 ^ { \circ } $$d each. Find (a) the value ofn, $$ S u m o f e x t e r i o r a n g l e s = 3 6 0 ^ { \circ } $$ $$ 2 1 ^ { \circ...
a plane polygon with three sides and three angles,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银行等数
根据内角和公式 $(n-2) \times 180° = 5040°$,解得: n-2 = (5040)/(180) = 28 ⇒ n=30. 因此多边形为30边形。 2. **计算对角线数量**: 多边形对角线总数公式为 $\frac{n(n-3)}{2}$,代入$n=30$: (30 * (30-3))/2 = (30 * 27)/2 = 405. 3. **验证合理性**:...
The sum of a polygon with (2n−3) sides is 62 right angles. Find the value of n. Polygon: A regular polygon is a two-dimensional shape having three or more sides. The sides of a polygon are of the same length and have the same angle between them. Triangle, ...
Polygons include convex and concave polygons. However, in middle school, we usually consider only convex polygons.#The sum of the internal angles of ann-gon is (n 2) × 180, and the sum of its external angles is 360. If all the internal angles of ann-gon are equal, then they are...
解析 Solution:Interior angle = 165°Exterior angle = 180° - 165° = 15°Number of sides = ((Sum of exterior angles))((exterior angles))⇒ Number of sides =(360)(15) = 24Thus, the regular polygon have 24 sides.反馈 收藏
The formula tells you what the interior angles of a polygon add up to. Example Imagine you wanted to find the sum of the interior angles of a triangle. A triangle has 3 sides, so n = 3. Using the formula: Sum of interior angles = (n − 2) × 180° Sum of interior angles...
Find the number of sides of the polygon. 相关知识点: 试题来源: 解析 17多边形的内角和公式为(n-2) * 180°,其中n为边数。根据题意,内角和为2700°,建立方程: \[ (n-2) \times 180 = 2700 \] 将方程两边同时除以180: \[ n - 2 = \frac{2700}{180} = 15 \] 解得: \[ n = 15 + ...
Francine has taught elementary school and is currently an elementary Math specialist. She has two Master's degrees: Curriculum and Instruction in Math K-14 and Educational LeadershipCite this lesson A regular polygon has sides that have the same length and angles that have equal measures. Learn ...
Thus, the sum of the interior angles of a polygon with {eq}n {/eq} sides is {eq}(n - 2) 1 8 0^{\circ} {/eq}. Pentagon divided into three triangles after two diagonals from one vertex are drawn We will do the sum of the interior angles of a few polygons and display them ...