Classifying Triangles Worksheets
Classify geometric figures using their stated properties, including inclusive shape categories.
Before you begin
Read labeled dimensions and coordinates. Recall multiplication facts and length units.
Worked example
Classify a triangle with side lengths 5, 5, 6 cm as equilateral, isosceles but not equilateral, or scalene.
- Compare the side lengths.
- Three equal sides: equilateral. Exactly two: isosceles but not equilateral. No equal sides: scalene.
Answer: Isosceles but not equilateral
Check your result using the method in the example before moving to the next question.
Choose your level
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
- Easy: Start with the preview and follow the worked example.
- Medium: Practice the same exercise types with a fresh numbered set.
- Hard: Use another set to practice explaining and checking your answers.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
Classify a triangle with side lengths 3, 3, 4 cm as equilateral, isosceles but not equilateral, or scalene.
2
Classify a triangle with side lengths 4, 4, 4 cm as equilateral, isosceles but not equilateral, or scalene.
3
Classify a triangle with side lengths 6, 7, 8 cm as equilateral, isosceles but not equilateral, or scalene.
4
Classify a triangle with side lengths 7, 7, 8 cm as equilateral, isosceles but not equilateral, or scalene.
5
Classify a triangle with side lengths 2, 2, 2 cm as equilateral, isosceles but not equilateral, or scalene.
6
Classify a triangle with side lengths 4, 5, 6 cm as equilateral, isosceles but not equilateral, or scalene.
Answer Key
1. Isosceles but not equilateral2. Equilateral3. Scalene4. Isosceles but not equilateral5. Equilateral6. Scalene