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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 19 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: square, scalene triangle, rectangle that is not a square, rhombus that is not a square

RegularIrregular
2.Sort each one into the right box.

Sort: rhombus that is not a square, square, kite, equilateral triangle

RegularIrregular
3.Sort each one into the right box.

Sort: scalene triangle, kite, regular hexagon, rhombus that is not a square

RegularIrregular
4.Sort each one into the right box.

Sort: regular hexagon, regular pentagon, kite, scalene triangle

RegularIrregular
5.Sort each one into the right box.

Sort: regular hexagon, square, regular octagon, rectangle that is not a square

RegularIrregular

LessonPrint · 5.G.B.3 · Set 19 · free to copy for classroom use

Answer key — Regular and Irregular

Set 19. Prints on its own sheet.

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

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