Types of Triangles - Free Printable

Let’s go through each triangle one by one and decide if it’s Equilateral, Isosceles, or Scalene based on its sides.

Remember:
- Equilateral = all 3 sides are the same length.
- Isosceles = exactly 2 sides are the same length.
- Scalene = all 3 sides are different lengths.

We’ll look at each triangle visually (since no measurements are given) and use our best judgment based on how they’re drawn.

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Row 1:

1. First triangle (left): Looks like all sides are different → Scalene
2. Second triangle (middle): All sides look equal → Equilateral
3. Third triangle (right): Two sides look equal, base is shorter → Isosceles

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Row 2:

4. First triangle (left): All sides look equal → Equilateral
5. Second triangle (middle): All sides look different → Scalene
6. Third triangle (right): Very small, but two sides look equal → Isosceles

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Row 3:

7. First triangle (left): Two sides look equal → Isosceles
8. Second triangle (middle): All sides look different → Scalene
9. Third triangle (right): Two sides look equal → Isosceles

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Row 4:

10. First triangle (left): All sides look different → Scalene
11. Second triangle (middle): Two sides look equal → Isosceles
12. Third triangle (right): Two sides look equal → Isosceles

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Now let’s list them in order from left to right, top to bottom:

1. Scalene
2. Equilateral
3. Isosceles
4. Equilateral
5. Scalene
6. Isosceles
7. Isosceles
8. Scalene
9. Isosceles
10. Scalene
11. Isosceles
12. Isosceles

Final Answer:
Scalene, Equilateral, Isosceles, Equilateral, Scalene, Isosceles, Isosceles, Scalene, Isosceles, Scalene, Isosceles, Isosceles