Isosceles, Equilateral, and Scalene Triangles worksheet | Live ... - Free Printable

Let’s go through each triangle one by one.

We need to label each as:
- Equilateral → all three sides are equal (marked with same number of tick marks)
- Isosceles → exactly two sides are equal
- Scalene → no sides are equal (no matching tick marks)

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Triangle 1: All three sides have one tick mark → all sides equal → Equilateral

Triangle 2: Two sides have one tick mark, third side has none → two sides equal → Isosceles

Triangle 3: No tick marks at all → all sides different → Scalene

Triangle 4: No tick marks → all sides different → Scalene

Triangle 5: All three sides have one tick mark → all sides equal → Equilateral

Triangle 6: Two sides have one tick mark → two sides equal → Isosceles

Triangle 7: Two sides have one tick mark → two sides equal → Isosceles

Triangle 8: No tick marks → all sides different → Scalene

Triangle 9: All three sides have one tick mark → all sides equal → Equilateral

Triangle 10: No tick marks → all sides different → Scalene

Triangle 11: Two sides have one tick mark → two sides equal → Isosceles

Triangle 12: All three sides have one tick mark → all sides equal → Equilateral

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Final Answer:
1) Equilateral
2) Isosceles
3) Scalene
4) Scalene
5) Equilateral
6) Isosceles
7) Isosceles
8) Scalene
9) Equilateral
10) Scalene
11) Isosceles
12) Equilateral