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📐 Geometry

Perimeter of Triangle

Perimeter = sum of all sides

Formula

P = a + b + c

Perimeter = sum of all sides

Example

  • a = 5
  • b = 7
  • c = 8
  • P = 20
Result 20
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Grade 9 · Perimeter of Triangle

Easy 20 questions Worksheet #27538 For Perimeter of Triangle

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MathDigits Worksheet

Grade 9 · Perimeter of Triangle

Easy · 20 questions · Worksheet #27538 · Perimeter of Triangle

Name: ________________________

Date: ______________ Score: ______

  1. fill Find the perimeter of a triangle with sides 19 cm, 165 cm, and 140 cm. (P = a + b + c)
    ______________________________
  2. fill Find the perimeter of a triangle with sides 63 cm, 58 cm, and 155 cm. (P = a + b + c)
    ______________________________
  3. fill Find the perimeter of a triangle with sides 109 cm, 69 cm, and 33 cm. (P = a + b + c)
    ______________________________
  4. fill Find the perimeter of a triangle with sides 171 cm, 89 cm, and 84 cm. (P = a + b + c)
    ______________________________
  5. fill Find the perimeter of a triangle with sides 12 cm, 133 cm, and 43 cm. (P = a + b + c)
    ______________________________
  6. fill Find the perimeter of a triangle with sides 15 cm, 33 cm, and 136 cm. (P = a + b + c)
    ______________________________
  7. fill Find the perimeter of a triangle with sides 157 cm, 199 cm, and 68 cm. (P = a + b + c)
    ______________________________
  8. fill Find the perimeter of a triangle with sides 196 cm, 75 cm, and 114 cm. (P = a + b + c)
    ______________________________
  9. fill Find the perimeter of a triangle with sides 64 cm, 199 cm, and 86 cm. (P = a + b + c)
    ______________________________
  10. fill Find the perimeter of a triangle with sides 36 cm, 34 cm, and 177 cm. (P = a + b + c)
    ______________________________
  11. fill Find the perimeter of a triangle with sides 137 cm, 190 cm, and 26 cm. (P = a + b + c)
    ______________________________
  12. fill Find the perimeter of a triangle with sides 96 cm, 7 cm, and 187 cm. (P = a + b + c)
    ______________________________
  13. fill Find the perimeter of a triangle with sides 175 cm, 181 cm, and 137 cm. (P = a + b + c)
    ______________________________
  14. fill Find the perimeter of a triangle with sides 187 cm, 105 cm, and 141 cm. (P = a + b + c)
    ______________________________
  15. fill Find the perimeter of a triangle with sides 171 cm, 59 cm, and 113 cm. (P = a + b + c)
    ______________________________
  16. fill Find the perimeter of a triangle with sides 106 cm, 17 cm, and 96 cm. (P = a + b + c)
    ______________________________
  17. fill Find the perimeter of a triangle with sides 94 cm, 59 cm, and 186 cm. (P = a + b + c)
    ______________________________
  18. fill Find the perimeter of a triangle with sides 160 cm, 52 cm, and 90 cm. (P = a + b + c)
    ______________________________
  19. fill Find the perimeter of a triangle with sides 169 cm, 64 cm, and 61 cm. (P = a + b + c)
    ______________________________
  20. fill Find the perimeter of a triangle with sides 62 cm, 49 cm, and 156 cm. (P = a + b + c)
    ______________________________

Updated July 2026

FAQs

What is Perimeter of Triangle?

Perimeter of Triangle (perimeter triangle) is a geometry relationship written as Perimeter = sum of all sides or P = a + b + c. Students use it to solve unknowns when enough values are known.

How do you calculate Perimeter of Triangle step by step?

Write Perimeter = sum of all sides, substitute the known numbers carefully, then simplify. Worked walkthrough: a = 5 b = 7 c = 8 P = 20.

When is Perimeter of Triangle taught in school?

Perimeter of Triangle usually appears in geometry units during middle or secondary school. Match difficulty with MathDigits grade worksheets so practice fits the curriculum year.

What is a real example of Perimeter of Triangle?

On this page the worked result is 20. Generate a formula worksheet below for more unique practice sets.

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