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Regular and Irregular is a free printable Grade 5 maths 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 pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 9 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: oblong, regular octagon, kite, regular pentagon

RegularIrregular
2.Sort each one into the right box.

Sort: oblong, kite, equilateral triangle, oblong

RegularIrregular
3.Sort each one into the right box.

Sort: regular hexagon, oblong, regular octagon, scalene triangle

RegularIrregular
4.Sort each one into the right box.

Sort: regular pentagon, oblong, kite, square

RegularIrregular
5.Sort each one into the right box.

Sort: regular hexagon, regular octagon, kite, oblong

RegularIrregular

LessonPrint · 5.G.B.3 · Set 9 · free to copy for classroom use

Answer key — Regular and Irregular

Set 9. Prints on its own sheet.

  1. 1.Regular: regular octagon, regular pentagon; Irregular: oblong, kite
  2. 2.Regular: equilateral triangle; Irregular: oblong, kite, oblong
  3. 3.Regular: regular hexagon, regular octagon; Irregular: oblong, scalene triangle
  4. 4.Regular: regular pentagon, square; Irregular: oblong, kite
  5. 5.Regular: regular hexagon, regular octagon; Irregular: kite, oblong

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