Classifying Triangles Activities

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55 Ratings
The Craft of Teaching
Grade Levels
3rd - 5th
Formats Included
  • PDF
68 pages
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  1. These Common Core aligned geometry sorts include quadrilaterals AND triangles! They are perfect for centers, partner work, small group instruction or independent work. By purchasing the bundle you will save 20% over buying each set individually!Included in this bundle are the following sets:Quadrila
    Price $7.20Original Price $9.00Save $1.80


Triangles take geometry to the next level! This shape sort uses all types of triangles to reinforce describing shapes with their attributes - including side length and angle size. This sort can be used by individuals, in partners, small groups or as a center!

Click here to save 20% on the 2D Shape Sort BUNDLE including triangles AND quadrilaterals.

In this resource there are several ideas for using the triangle shape cards. Also included are graphic organizers and different sorting mats that can be cut out and laminated for a center. Check out the preview for more info!

Included in this product:

30 triangle shape cards

2 graphic organizers for sorting by triangle name

1 blank graphic organizer for open sorting

Triangle Reference Sheet for students to take notes

Triangles Quiz with answer key

6 sorting mats for sorting triangles by name/attributes

7 triangle vocabulary cards

Venn diagram and triple venn diagram for comparing triangles

Answer Keys

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Total Pages
68 pages
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.
Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Classify two-dimensional figures in a hierarchy based on properties.


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