Question

Figure ABCDE is a regular pentagon. Segment AE is located at A (2, 1) and E (4, 1). What is the perimeter of ABCDE?

4 units
6 units
8 units
10 units

Answer 1

10 units

Explanation:

took the test

Answer 2

Correct option: fourth one -> 10 units

Explanation:

As the pentagon is regular, all the sides have the same length, so we just need to find the length of the side AE and then multiply by 5.

To find the length of AE we can find the distance from point A to point E:

distance from A to E:

sqrt( (4-2)^2 + (1-1)^2) = 2 units

To the perimeter of the pentagon is 5 * 2 = 10 units.

Correct option: fourth one