Math-Open and Closed Shapes

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What is a closed shape?

Back

A closed shape is a shape where all the lines connect to form a complete figure, like a circle or a square.

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What is an open shape?

Back

An open shape is a shape that does not connect all the way around, leaving a gap, like a U or a C.

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Give an example of a closed shape.

Back

A square is an example of a closed shape.

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Give an example of an open shape.

Back

A U is an example of an open shape.

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How can you tell if a shape is closed?

Back

You can tell if a shape is closed if you can trace it without lifting your pencil and it forms a complete loop.

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How can you tell if a shape is open?

Back

You can tell if a shape is open if there is a gap in the lines and you cannot trace it without lifting your pencil.

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What shape is this: a triangle?

Back

A triangle is a closed shape because all its sides connect.

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What shape is this: a line?

Back

A line is an open shape because it does not connect at both ends.

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Is a circle an open or closed shape?

Back

A circle is a closed shape.

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Is a crescent moon an open or closed shape?

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A crescent moon is an open shape because it has gaps.

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