Resources for Math! 

Unit 5 Lesson 2 Practice examples below. 

Finding Unknown Side Lengths with Area:

• Divide the area by the known side length

Finding Unknown Side Lengths with Perimeter:

• Step 1: Add the two known side lengths together

• Step 2: Subtract the known side lengths from the perimeter

• Step 3: Divide your answer by 2 to get your unknown side lengths