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Parallel and Perpendicular is a free printable Grade 4 maths worksheet on classifying pairs of lines, aligned to Common Core standard 4.G.A.1. 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 10 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.

Parallel and Perpendicular

4.G.A.1

NameDate

Sort each one into the right box.

1.Sort each one into the right box.

Sort: hexagon, trapezoid, square, equilateral triangle

Has parallel sidesNo parallel sides
2.Sort each one into the right box.

Sort: parallelogram, equilateral triangle, rhombus, rectangle

Has parallel sidesNo parallel sides
3.Sort each one into the right box.

Sort: parallelogram, trapezoid, rhombus, equilateral triangle

Has parallel sidesNo parallel sides
4.Sort each one into the right box.

Sort: parallelogram, scalene triangle, equilateral triangle, trapezoid

Has parallel sidesNo parallel sides
5.Sort each one into the right box.

Sort: hexagon, trapezoid, kite, scalene triangle

Has parallel sidesNo parallel sides

LessonPrint · 4.G.A.1 · Set 10 · free to copy for classroom use

Answer key — Parallel and Perpendicular

Set 10. Prints on its own sheet.

  1. 1.Has parallel sides: hexagon, trapezoid, square; No parallel sides: equilateral triangle
  2. 2.Has parallel sides: parallelogram, rhombus, rectangle; No parallel sides: equilateral triangle
  3. 3.Has parallel sides: parallelogram, trapezoid, rhombus; No parallel sides: equilateral triangle
  4. 4.Has parallel sides: parallelogram, trapezoid; No parallel sides: scalene triangle, equilateral triangle
  5. 5.Has parallel sides: hexagon, trapezoid; No parallel sides: kite, scalene triangle

Last reviewed 2026-09-05. Aligned to 4.G.A.1 of the Common Core State Standards for mathematics.