2. What is the perimeter of rectangle \( J K L M \), with vertices \( J(-1,3), K(2,3), L(2,-5) \), and \( M(-1,-5) \) ?
a. 6 units
c. 18 units
b. 10 units
d. 22 units

Answer

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Answer

3. Calculate perimeter: 2(3+8) = 18

Steps

Step 1 ：1. Calculate JK: \( \sqrt{(2-(-1))^2 + (3-3)^2} = 3 \)

Step 2 ：2. Calculate JM: \( \sqrt{(-1-(-1))^2 + (3-(-5))^2} = 8 \)

Step 3 ：3. Calculate perimeter: 2(3+8) = 18