Question

What is the perimeter of a triangle with coordinates X(4, 9), Y(4, ­2), and Z(­5, ­2)? Draw

Answer 1

8+sqrt(50)

Explanation:

To find the perimeter of a triangle, we have to know all the sides. XY and YZ are easy, because they are on the same line, but for XZ, we will have to use the pythagorean theorem. Since it is a^2+b^2=c^2, it will be sqrt(1+7^2), which is sqrt(50). Because XY is 7 and YZ is 1, we add all these numbers up to get 8+sqrt(50).