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Grade 3 Go Math Practice - Answer Keys
Chapter 12: Mid -Chapter Checkpoint
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Question 10
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Anne drew the shape at the right. Is her shape an open shape or a closed shape?
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Question 11
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This sign tells drivers there is a steep hill ahead. Write the number of sides and the number of angles in the shape of the sign. Then name the shape.
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Question 12
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Why is this closed plane shape NOT a polygon?
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Question 13
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Sean drew a shape with 2 fewer sides than an octagon. Which shape did he draw?
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Question 14
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John drew a polygon with two line segments that meet to form a right angle. Circle the words that describe the line segments.
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