Classifying Triangles Worksheet: Identify each triangle as right, scalene, isosceles, or equilateral based on side markings and angle symbols.

Let’s go through each triangle one by one. We’ll look for:

- Right triangle: Has a square corner (90° angle).
- Isosceles triangle: Has two sides marked with the same number of ticks — meaning those two sides are equal.
- Equilateral triangle: All three sides have the same tick marks — all sides equal.
- Scalene triangle: No sides are equal, and no right angle.

We’ll check each triangle carefully.

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Triangle 1: Two sides have one tick mark → two equal sides → isosceles

Triangle 2: Has a square in the corner → right angle → right

Triangle 3: All three sides have one tick mark → all sides equal → equilateral

Triangle 4: No ticks, no right angle → all sides different → scalene

Triangle 5: Two sides have one tick → two equal sides → isosceles

Triangle 6: Has a square in the corner → right angle → right

Triangle 7: Has a square in the corner → right angle → right

Triangle 8: Two sides have one tick → two equal sides → isosceles

Triangle 9: Two sides have one tick → two equal sides → isosceles

Triangle 10: All three sides have one tick → all sides equal → equilateral

Triangle 11: No ticks, no right angle → all sides different → scalene

Triangle 12: Two sides have one tick → two equal sides → isosceles

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Final Answer:
1. isosceles
2. right
3. equilateral
4. scalene
5. isosceles
6. right
7. right
8. isosceles
9. isosceles
10. equilateral
11. scalene
12. isosceles