Defining Versus Non-Defining Attributes: CCSS.MATH.CONTENT.1.G.A.1 - Common Core: 1st Grade Math
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Why is this shape a square?
Why is this shape a square?
A square has 4 equal sides.
A square has 4 equal sides.
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Why is this shape a triangle?
Why is this shape a triangle?
A triangle has 
sides.
A triangle has
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Why is this shape a rectangle?
Why is this shape a rectangle?
A rectangle has 
sides, and the opposite sides have to be equal.
A rectangle has
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Why is this shape a circle?
Why is this shape a circle?
A circle is a round shape, with no sides or edges.
A circle is a round shape, with no sides or edges.
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Why is this shape a pentagon?
Why is this shape a pentagon?
A pentagon has 
sides.
A pentagon has
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Why is this shape a hexagon?
Why is this shape a hexagon?
A hexagon has 
sides.
A hexagon has
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Why is this shape a heptagon?
Why is this shape a heptagon?
A heptagon has 
sides.
A heptagon has
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Why is this shape an octagon?
Why is this shape an octagon?
An octagon has 
sides.
An octagon has
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Why is this shape a trapezoid?
Why is this shape a trapezoid?
A trapezoid has 
sides, and only one set of parallel lines.
A trapezoid has
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Why is this shape NOT a triangle?
Why is this shape NOT a triangle?
A triangle has 
sides, and this shape has 
.
A triangle has
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Why is this shape NOT a square?
Why is this shape NOT a square?
A square has to have 
equal sides, and this shape does not have 
equal sides.
A square has to have
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Why is this shape NOT a circle?
Why is this shape NOT a circle?
A circle does not have sides, and this shape has 
sides.
A circle does not have sides, and this shape has
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If I make the triangle below bigger, does that change the type of shape that I have?
If I make the triangle below bigger, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a triangle is, it's still a triangle.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a triangle is, it's still a triangle.
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If I make the square below bigger, does that change the type of shape that I have?
If I make the square below bigger, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a square is, it's still a square.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a square is, it's still a square.
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If I make the rectangle below bigger, does that change the type of shape that I have?
If I make the rectangle below bigger, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a rectangle is, it's still a rectangle.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a rectangle is, it's still a rectangle.
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If I make the square below smaller, does that change the type of shape that I have?
If I make the square below smaller, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a square is, it's still a square.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a square is, it's still a square.
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If I make the rectangle below smaller, does that change the type of shape that I have?
If I make the rectangle below smaller, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a rectangle is, it's still a rectangle.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a rectangle is, it's still a rectangle.
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If I make the triangle below smaller, does that change the type of shape that I have?
If I make the triangle below smaller, does that change the type of shape that I have?
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a triangle is, it's still a triangle.
Changing the size of a shape does not change the type of shape. Size is considered a non-defining attribute, which means no matter how big or small a triangle is, it's still a triangle.
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If I add another side to the shape below, would that change the name of the shape?
If I add another side to the shape below, would that change the name of the shape?
If I added another side to the triangle, I would no longer have a three-sided shape, I would have a four-sided shape. By definition, a triangle has three sides, so if I added another side I would no longer have a triangle. The number of sides a shape has is an example of a defining attribute, which means it does determine whether or not a shape is a certain shape.
If I added another side to the triangle, I would no longer have a three-sided shape, I would have a four-sided shape. By definition, a triangle has three sides, so if I added another side I would no longer have a triangle. The number of sides a shape has is an example of a defining attribute, which means it does determine whether or not a shape is a certain shape.
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If I add another side to the shape below, would that change the name of the shape?
If I add another side to the shape below, would that change the name of the shape?
If I added another side to the square, I would no longer have a four-sided shape, I would have a five-sided shape. By definition, a square has four sides, so if I added another side I would no longer have a square. The number of sides a shape has is an example of a defining attribute, which means it does determine whether or not a shape is a certain shape.
If I added another side to the square, I would no longer have a four-sided shape, I would have a five-sided shape. By definition, a square has four sides, so if I added another side I would no longer have a square. The number of sides a shape has is an example of a defining attribute, which means it does determine whether or not a shape is a certain shape.
Compare your answer with the correct one above