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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 23 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 is colored red. Is it still a rectangle?
2.A rectangle has one side made curved. Is it still a rectangle?
3.A rectangle has one side taken away. Is it still a rectangle?
4.A square is turned on its side. Is it still a square?
5.A rectangle is turned on its side. Is it still a rectangle?
6.A rectangle has one corner cut off. Is it still a rectangle?
7.A triangle has one side taken away. Is it still a triangle?
8.A triangle is turned upside down. Is it still a triangle?
9.A hexagon has one side made curved. Is it still a hexagon?
10.A square is turned upside down. Is it still a square?

LessonPrint · 1.G.A.1 · Set 23 · free to copy for classroom use

Answer key — Which Attribute Matters?

Set 23. Prints on its own sheet.

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

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