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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 17 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 square has one more side added. Is it still a square?
2.A triangle is turned upside down. Is it still a triangle?
3.A hexagon has one side taken away. Is it still a hexagon?
4.A triangle is moved to the other side of the page. Is it still a triangle?
5.A rectangle has one more side added. Is it still a rectangle?
6.A triangle is made much smaller. Is it still a triangle?
7.A square has one side taken away. Is it still a square?
8.A rectangle is made much smaller. Is it still a rectangle?
9.A rectangle is moved to the other side of the page. Is it still a rectangle?
10.A hexagon has one side made curved. Is it still a hexagon?

LessonPrint · 1.G.A.1 · Set 17 · free to copy for classroom use

Answer key — Which Attribute Matters?

Set 17. Prints on its own sheet.

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

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