SOLUTION: Not counting rotations and reflections, there are only two different shapes that can be made by joining three squares together. Again not counting rotations and reflections, the nu

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Question 1201550: Not counting rotations and reflections, there are only two different shapes that can be made by joining three squares together. Again not counting rotations and reflections, the number of different shapes that can be made by joining four squares together is
a) 3 b) 4 c) 5 d) 6 e) 7

Found 2 solutions by mananth, ikleyn:
Answer by mananth(16949) About Me  (Show Source):
Answer by ikleyn(53595) About Me  (Show Source):
You can put this solution on YOUR website!
.
Not counting rotations and reflections, there are only two different shapes that can be made by joining three squares
together. Again not counting rotations and reflections, the number of different shapes that can be made by joining four
squares together is
a) 3 b) 4 c) 5 d) 6 e) 7
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The post by @mananth has no any relation to the posed question.

Without additional explanations, the meaning of this assignment is dark and unclear.


For complete explanation, see, for example, this site

https://www.mathsisfun.com/geometry/tetromino.html