A regular heptagon has one side with endpoints (-5, 10) and (3, -5). What is the perimeter of the heptagon?
Options
A
119
B
113
C
115
D
110
Answer & Analysis
Answer
A
Analysis
Question Analysis
The main focus of this question is to calculate the perimeter of a regular heptagon. We need to first find the length of one side using the distance formula between two given points in the coordinate plane. Then, we use the property that all sides of a regular heptagon are equal to find the perimeter. This tests the understanding of coordinate - geometry and the characteristics of regular polygons.
Key Concept Explanation
Distance Formula: For two points and in a coordinate plane, the distance between them is given by .
Regular Heptagon: A regular heptagon has 7 sides of equal length. The perimeter of a regular heptagon is calculated as , where is the length of one side.
Step - by - Step Solution
1. Find the length of one side:
Let and .
Calculate and :
.
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