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Help the Sorting Robot

Grade 4 geometry: help a sorting robot classify shapes by parallel sides, perpendicular sides, and acute, right, or obtuse angles.

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 identify shapes that have parallel sides or perpendicular sides.
Students classify shapes by whether they have acute, right, or obtuse angles.
Students recognize right triangles and sort shapes using two rules at once.

How to use

Let students trace sides with a ruler to check for parallel sides and use the corner of an index card to test for right angles. Part 3 works well as a partner activity.

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

Help the Sorting Robot

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

Part 1: Parallel and perpendicular sides

A robot named Bolt is learning to sort shapes. Parallel sides run in the same direction and never meet, even if you make them longer. Perpendicular sides meet to make a right angle (a square corner).

Bolt only picks up shapes that have at least one pair of parallel sides. Circle every shape Bolt picks up.