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Fun review! Each group answers 10 questions solving for the missing side or angle of isosceles and equilateral triangles. The answers make 5 ordered pairs. After they answer the questions, they plot the points and connect them in order on a large coordinate grid at the front of the room. Each group plots their points on the same grid with the x-axis going from [-60, 60] and the y-axis from [-40, 70]. When they are done it will make a picture (a dolphin). It's a way for them to self assess their work.
There are 5 groups. The last two questions have the same answers as the first 2 questions of the next group. That way a continuous picture is graphed. The picture it draws is included.
Everyone works hard to make sure their group doesn't mess up the final picture. The kids and I love this activity. I've used it to practice solving equations, too. It's easy to create equations that have these as solutions. I have an Algebra solving equations one also (different answers but it creates the same picture).