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Classifying Triangles / Types of Triangles

This page has printable worksheets in which students will identify and classify triangles by type. Students will sort by: scalene, isosceles, equilateral, right, acute, and obtuse.E

types of triangles Worksheets

Classifying by Side:
Equilateral, Scalene, Isosceles

Identify each triangle type by the lengths of its sides.
6th and 7th Grades
Common Core
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Determine which of the pictured triangles are isosceles, equilateral, scalene, and right.
6th and 7th Grades

Classifying by Angles
Acute, Obtuse, Right

Tell whether each triangle is acute, obtuse, or right.
4th and 5th Grades
See also:
Angle Worksheets

Print worksheets on classifying, measuring, and drawing angles.

Geometry Worksheets

These printables cover a wide-variety of topics, including polygons, circles, area, perimeter, coordinate planes, ordered pairs, lines, points, tessellation, and symmetry.

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Common Core Alignment