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 2 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: scalene triangle, rhombus that is not a square, square, regular pentagon
Regular Irregular
2. Sort each one into the right box.
Sort: rectangle that is not a square, scalene triangle, equilateral triangle, square
Regular Irregular
3. Sort each one into the right box.
Sort: rectangle that is not a square, regular octagon, regular hexagon, regular pentagon
Regular Irregular
4. Sort each one into the right box.
Sort: kite, square, rhombus that is not a square, equilateral triangle
Regular Irregular
5. Sort each one into the right box.
Sort: rhombus that is not a square, equilateral triangle, rectangle that is not a square, square
Regular Irregular
LessonPrint · 5.G.B.3 · Set 2 · free to copy for classroom use
Answer key — Regular and Irregular Set 2. Prints on its own sheet.
1. Regular: square, regular pentagon; Irregular: scalene triangle, rhombus that is not a square 2. Regular: equilateral triangle, square; Irregular: rectangle that is not a square, scalene triangle 3. Regular: regular octagon, regular hexagon, regular pentagon; Irregular: rectangle that is not a square 4. Regular: square, equilateral triangle; Irregular: kite, rhombus that is not a square 5. Regular: equilateral triangle, square; Irregular: rhombus that is not a square, 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.