Let’s go through each triangle one by one.
We need to name each triangle as:
-
equilateral → all 3 sides are equal
-
isosceles → at least 2 sides are equal
-
scalene → no sides are equal
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Triangle 1 (top left):
Sides: 3 cm, 4 cm, 5 cm
→ All different →
scalene
Triangle 2 (top middle):
Sides: 4 cm, 4 cm, 3 cm
→ Two sides equal →
isosceles
Triangle 3 (top right):
Sides: 6 cm, 6 cm, 6 cm
→ All three equal →
equilateral
Triangle 4 (middle left):
Sides: 8 cm, 7 cm, 6 cm
→ All different →
scalene
Triangle 5 (middle center):
Sides: 7 cm, 6 cm, 5 cm
→ All different →
scalene
Triangle 6 (middle right):
Sides: 6 cm, 5 cm, 6 cm
→ Two sides equal (6 cm and 6 cm) →
isosceles
Triangle 7 (bottom left):
Sides: 3 cm, 3 cm, 3 cm
→ All three equal →
equilateral
Triangle 8 (bottom center):
Sides: 6 cm, 5 cm, 4 cm
→ All different →
scalene
Triangle 9 (bottom right):
Sides: 7 cm, 6 cm, 6 cm
→ Two sides equal (6 cm and 6 cm) →
isosceles
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Now, the last question:
> I have at least two sides of equal length. What kind of triangle am I?
That’s the definition of
isosceles.
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Final Answer:
scalene, isosceles, equilateral, scalene, scalene, isosceles, equilateral, scalene, isosceles, isosceles
Parent Tip: Review the logic above to help your child master the concept of types of triangle worksheet.
