To find the perimeter of a triangle, we need to add up the lengths of all its sides. Let's solve each problem step by step.
Triangle a:
- Sides: 4 cm, 6 cm, 8 cm
- Perimeter = \( 4 + 6 + 8 \)
- Perimeter = \( 18 \) cm
Triangle b:
- Sides: 5 cm, 8 cm, 10 cm
- Perimeter = \( 5 + 8 + 10 \)
- Perimeter = \( 23 \) cm
Triangle c:
- Sides: 6 cm, 8 cm, 3 cm
- Perimeter = \( 6 + 8 + 3 \)
- Perimeter = \( 17 \) cm
Triangle d:
- Sides: 5 cm, 5 cm, 5 cm (Equilateral triangle)
- Perimeter = \( 5 + 5 + 5 \)
- Perimeter = \( 15 \) cm
Triangle e:
- Sides: 4 cm, 4 cm, 3 cm
- Perimeter = \( 4 + 4 + 3 \)
- Perimeter = \( 11 \) cm
Triangle f:
- Sides: 3 cm, 6 cm, 7 cm
- Perimeter = \( 3 + 6 + 7 \)
- Perimeter = \( 16 \) cm
Final Answers:
-
Triangle a: \( \boxed{18} \) cm
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Triangle b: \( \boxed{23} \) cm
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Triangle c: \( \boxed{17} \) cm
-
Triangle d: \( \boxed{15} \) cm
-
Triangle e: \( \boxed{11} \) cm
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Triangle f: \( \boxed{16} \) cm
These are the perimeters of the given triangles. Each step involves simply adding the lengths of the sides of the triangle.
Parent Tip: Review the logic above to help your child master the concept of perimeter of triangle worksheet.
