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Which Attribute Matters? is a free printable Grade 1 math worksheet on distinguishing defining from non-defining attributes, aligned to Common Core standard 1.G.A.1. It prints 10 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 12 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Which Attribute Matters?

1.G.A.1

NameDate

Write yes or no.

1.A rectangle has one side made curved. Is it still a rectangle?
2.A triangle has one side made curved. Is it still a triangle?
3.A triangle has one side taken away. Is it still a triangle?
4.A hexagon is colored red. Is it still a hexagon?
5.A triangle is turned on its side. Is it still a triangle?
6.A square has one side taken away. Is it still a square?
7.A hexagon is made much smaller. Is it still a hexagon?
8.A triangle has one corner cut off. Is it still a triangle?
9.A hexagon is moved to the other side of the page. Is it still a hexagon?
10.A triangle is turned upside down. Is it still a triangle?

LessonPrint · 1.G.A.1 · Set 12 · free to copy for classroom use

Answer key — Which Attribute Matters?

Set 12. Prints on its own sheet.

  1. 1.no
  2. 2.no
  3. 3.no
  4. 4.yes
  5. 5.yes
  6. 6.no
  7. 7.yes
  8. 8.no
  9. 9.yes
  10. 10.yes

Last reviewed 2026-09-05. Aligned to 1.G.A.1 of the Common Core State Standards for Mathematics.