standard_description: Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent.
problem_activity: Task
Compare the number of circles in each box. If they are equal, write a number sentence. For example:
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$$4+3=5+1+1$$
If they are not equal, write "not equal."
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aligns: no