Common Core: 1st Grade Math : Defining Versus Non-Defining Attributes: CCSS.MATH.CONTENT.1.G.A.1
Study concepts, example questions & explanations for Common Core: 1st Grade Math
All Common Core: 1st Grade Math Resources
Example Questions
Example Question #21 : Geometry
If I add another side to the shape below, would that change the name of the shape?
No
Yes
Yes
If I added another side to the pentagon, I would no longer have a five-sided shape, I would have a six-sided shape. By definition, a pentagon has five sides, so if I added another side I would no longer have a pentagon. 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.
Example Question #22 : Geometry
If I add another side to the shape below, would that change the name of the shape?
Yes
No
Yes
If I added another side to the hexagon, I would no longer have a six-sided shape, I would have a seven-sided shape. By definition, a hexagon has six sides, so if I added another side I would no longer have a hexagon. 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.
Example Question #21 : Reason With Shapes And Their Attributes
If I change the color of the pentagon, does that change the type of shape that I have?
No
Yes
No
Changing the color of a shape does not change the type of shape. Color is considered a non-defining attribute, which means no matter what color a pentagon is, it's still a pentagon.
Example Question #22 : Reason With Shapes And Their Attributes
If I change the color of the rectangle, does that change the type of shape that I have?
Yes
No
No
Changing the color of a shape does not change the type of shape. Color is considered a non-defining attribute, which means no matter what color a rectangle is, it's still a rectangle.
All Common Core: 1st Grade Math Resources
