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Regular and Irregular is a free printable Grade 5 math worksheet on whether all sides and angles are equal, aligned to Common Core standard 5.G.B.3. It prints 5 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 24 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.

Regular and Irregular

5.G.B.3

NameDate

Sort each one into the right box.

1.Sort each one into the right box.

Sort: regular pentagon, kite, scalene triangle, square

RegularIrregular
2.Sort each one into the right box.

Sort: rectangle that is not a square, regular octagon, kite, rhombus that is not a square

RegularIrregular
3.Sort each one into the right box.

Sort: rectangle that is not a square, regular octagon, square, equilateral triangle

RegularIrregular
4.Sort each one into the right box.

Sort: equilateral triangle, regular pentagon, regular hexagon, square

RegularIrregular
5.Sort each one into the right box.

Sort: equilateral triangle, rectangle that is not a square, scalene triangle, regular hexagon

RegularIrregular

LessonPrint · 5.G.B.3 · Set 24 · free to copy for classroom use

Answer key — Regular and Irregular

Set 24. Prints on its own sheet.

  1. 1.Regular: regular pentagon, square; Irregular: kite, scalene triangle
  2. 2.Regular: regular octagon; Irregular: rectangle that is not a square, kite, rhombus that is not a square
  3. 3.Regular: regular octagon, square, equilateral triangle; Irregular: rectangle that is not a square
  4. 4.Regular: equilateral triangle, regular pentagon, regular hexagon, square; Irregular: —
  5. 5.Regular: equilateral triangle, regular hexagon; Irregular: rectangle that is not a square, scalene triangle

Last reviewed 2026-09-05. Aligned to 5.G.B.3 of the Common Core State Standards for Mathematics.