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Free Classify Triangles Worksheets

With this worksheet generator, you can make worksheets for classifying triangles by their sides, angles, or both. This is one of the focus areas of 5th grade geometry, according to the Common Core Standards.

You can control the number of problems, workspace, border around the problems, image size, and additional instructions. Otherwise, it is pretty simple.

Here are some quick links for ready worksheets. Refresh the worksheet page to get another of the same kind.

Classify triangles by their sides

Classify triangles by their angles

Classify triangles by their sides and angles

Classify Triangles Worksheet Generator

Choose one of the problem types below.
Classify triangles by their sides only (equilateral, isosceles, scalene)
Classify triangles by their angles only (acute, obtuse, right)
Classify triangles by their sides and angles
(7 different types, such as acute isosceles, obtuse scalene, right isosceles, etc.)

Size of images:
Columns:   Rows:
(These determine the number of problems)

Number of empty lines below the problem (workspace)

Font:   Font Size:

Cell Padding:     Border:  

Additional title & instructions  (HTML allowed):


Key to Geometry workbook series

Key to Geometry Workbooks

Here is a non-intimidating way to prepare students for formal geometry. Key to Geometry workbooks introduce students to a wide range of geometric discoveries as they do step-by-step constructions. Using only a pencil, compass, and straightedge, students begin by drawing lines, bisecting angles, and reproducing segments. Later they do sophisticated constructions involving over a dozen steps-and are prompted to form their own generalizations. When they finish, students will have been introduced to 134 geometric terms and will be ready to tackle formal proofs.

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