Home / Math / Printables / Grade 5 / Regular and Irregular 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 22 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
Name Date
Sort each one into the right box.
1. Sort each one into the right box.
Sort: regular octagon, scalene triangle, rhombus that is not a square, equilateral triangle
Regular Irregular
2. Sort each one into the right box.
Sort: rectangle that is not a square, regular octagon, equilateral triangle, scalene triangle
Regular Irregular
3. Sort each one into the right box.
Sort: square, regular octagon, regular hexagon, rectangle that is not a square
Regular Irregular
4. Sort each one into the right box.
Sort: regular octagon, regular pentagon, kite, square
Regular Irregular
5. Sort each one into the right box.
Sort: scalene triangle, square, rhombus that is not a square, regular pentagon
Regular Irregular
LessonPrint · 5.G.B.3 · Set 22 · free to copy for classroom use
Answer key — Regular and Irregular Set 22. Prints on its own sheet.
1. Regular: regular octagon, equilateral triangle; Irregular: scalene triangle, rhombus that is not a square 2. Regular: regular octagon, equilateral triangle; Irregular: rectangle that is not a square, scalene triangle 3. Regular: square, regular octagon, regular hexagon; Irregular: rectangle that is not a square 4. Regular: regular octagon, regular pentagon, square; Irregular: kite 5. Regular: square, regular pentagon; Irregular: scalene triangle, rhombus that is not a square Last reviewed 2026-09-05. Aligned to 5.G.B.3 of the Common Core State Standards for Mathematics.