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Parallel and Perpendicular is a free printable Grade 4 math 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 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 21 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 pair of lines into the right box.

1.Sort each one into the right box.

Sort: the long edges of a ruler, the two rails of a train track, the two strokes of a capital V, the two strokes of a capital T

ParallelPerpendicularNeither
2.Sort each one into the right box.

Sort: the long edges of a ruler, the top and bottom edges of a door, the two strokes of a capital L, the hands of a clock at 3:00

ParallelPerpendicularNeither
3.Sort each one into the right box.

Sort: two edges meeting at the corner of a page, the top and bottom edges of a door, the long edges of a ruler, the two sloping sides of a capital A

ParallelPerpendicularNeither
4.Sort each one into the right box.

Sort: the two rails of a train track, two edges meeting at the corner of a page, the two strokes of a capital V, the long edges of a ruler

ParallelPerpendicularNeither
5.Sort each one into the right box.

Sort: the top and bottom edges of a door, the hands of a clock at 2:00, the two rails of a train track, the hands of a clock at 3:00

ParallelPerpendicularNeither

LessonPrint · 4.G.A.1 · Set 21 · free to copy for classroom use

Answer key — Parallel and Perpendicular

Set 21. Prints on its own sheet.

  1. 1.Parallel: the long edges of a ruler, the two rails of a train track; Perpendicular: the two strokes of a capital T; Neither: the two strokes of a capital V
  2. 2.Parallel: the long edges of a ruler, the top and bottom edges of a door; Perpendicular: the two strokes of a capital L, the hands of a clock at 3:00; Neither: —
  3. 3.Parallel: the top and bottom edges of a door, the long edges of a ruler; Perpendicular: two edges meeting at the corner of a page; Neither: the two sloping sides of a capital A
  4. 4.Parallel: the two rails of a train track, the long edges of a ruler; Perpendicular: two edges meeting at the corner of a page; Neither: the two strokes of a capital V
  5. 5.Parallel: the top and bottom edges of a door, the two rails of a train track; Perpendicular: the hands of a clock at 3:00; Neither: the hands of a clock at 2:00

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