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While working on the quadrilateral hotline, Jo Beth gets this call: “I need help identifying the shape of the quadrilateral flowerbed in front of my apartment. Because a shrub covers one side, I can only see three sides of the flowerbed. However, of the three sides I can see, two are parallel and all three are congruent. What are the possible shapes of my flowerbed?” Help Jo Beth answer the caller’s question. 

Refer to the Math Notes box in Lesson 7.1.5 for definitions of various quadrilaterals.