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Sorting Gems in the Treasure Chest

Grade 4 geometry: sort treasure gems by parallel sides, perpendicular sides, and acute, right, or obtuse angles, then solve shape clues.

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
10 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 count the pairs of parallel sides and the acute, right, and obtuse angles in a shape.
Students sort shapes using two attributes at once: parallel sides and right angles.
Students find the rule behind a sort and match shapes to clues about sides and angles.

How to use

Let students trace sides with a ruler to check for parallel sides and test corners with the corner of an index card. Part 2 works well as a partner discussion.

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

Sorting Gems in the Treasure Chest

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

Part 1: Look closely at each gem

Captain Rosa found a chest full of flat gems. Parallel sides run the same way and never meet, even if you make them longer. Perpendicular sides meet to make a right angle, like a square corner.

Look at these two gems.

How many pairs of parallel sides does Gem 1 have?
How many acute angles does Gem 1 have?
How many pairs of parallel sides does Gem 2 have?
How many obtuse angles does Gem 2 have?

Circle every gem that has at least one acute angle.

Read the clue on Captain Rosa's map: "I have 4 sides. I have 2 pairs of parallel sides. I have no right angles." Which gem matches the clue?