Lesson 14 Find the Area of Figures with Missing Sides
Let’s find the area of figures with missing side lengths.
Warm-up Notice and Wonder: Mystery Sides
What do you notice? What do you wonder?
Activity 1 The Mystery Side
Tyler says that the missing side length is 5 meters because it looks longer than the sides that are 4 meters long.
Do you agree or disagree? Be prepared to explain your reasoning.
Activity 2 Practice with Mystery Sides
Find the area of each figure. Explain or show your reasoning.
Find the area of this figure. Explain or show your reasoning.