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Sails, Flags, and Shapes at the Harbor worksheet preview

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Sails, Flags, and Shapes at the Harbor

Grade 4 geometry practice at the harbor: sort sails and flags by parallel sides, perpendicular sides, and angle types, and identify right triangles.

Grade 4MathInteractive · Printable

Aligned to4.G.A.2

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 Common Core standard
  • Printable answer key
  • 12 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 4
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Circle the answer, Sorting, Short answer, Drawing

About this worksheet

What students practice

  • Students sort two-dimensional shapes by whether they have parallel or perpendicular sides.
  • Students classify shapes and triangles by their right, acute, and obtuse angles.
  • Students identify right triangles in any position.

How to use

Use after teaching parallel lines, perpendicular lines, and angle types. Give students the corner of an index card to check for right angles.

Curriculum

Common Core standard covered

4.G.A.2

Sort two-dimensional figures by parallel or perpendicular lines and by angle types.

Preview

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Name Date

Sails, Flags, and Shapes at the Harbor

Sort shapes by parallel sides, perpendicular sides, and angles.

Lines on the dock

Parallel lines never cross. Perpendicular lines cross to make right angles.

1.
The ropes on the dock make these pairs of lines. Sort each pair.
ParallelPerpendicularCrossing, but not perpendicular
2.
The mast of a sailboat stands straight up from the flat deck.

The mast and the deck make a right angle, which measures  °. Lines that cross to make a right angle are called   lines.

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