Free Identifying Triangles Worksheets
Classify triangles by their sides (scalene, isosceles, equilateral) and angles (acute, right, obtuse) from a drawn figure — including combined labels and 'which figure is…' picture questions.
Difficulty levels: By sides and/or angles
Aligned standards
- CCSS 4.G.A.2 — Classify two-dimensional figures; identify triangles by sides and angles.
- CCSS 5.G.B.3 — Classify two-dimensional figures within a hierarchy.
- TEKS 4.6C — Classify triangles by their attributes (sides and angles).
- TEKS 5.5A — Classify two-dimensional figures using a hierarchy of attributes.
Generate an Identifying Triangles Worksheet
Pick a version below — each one is randomly generated, so you can make as many unique copies as you need.
Activity: