MathDigits app icon MathDigits Download App

📐 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
More Geometry

Grade 8 · Perimeter of Triangle

Easy 20 questions Worksheet #86466 For Perimeter of Triangle

Answer Sheet Generate New

MathDigits Worksheet

Grade 8 · Perimeter of Triangle

Easy · 20 questions · Worksheet #86466 · Perimeter of Triangle

Name: ________________________

Date: ______________ Score: ______

  1. fill Find the perimeter of a triangle with sides 73 cm, 72 cm, and 72 cm. (P = a + b + c)
    ______________________________
  2. fill Find the perimeter of a triangle with sides 24 cm, 91 cm, and 116 cm. (P = a + b + c)
    ______________________________
  3. fill Find the perimeter of a triangle with sides 93 cm, 143 cm, and 38 cm. (P = a + b + c)
    ______________________________
  4. fill Find the perimeter of a triangle with sides 77 cm, 12 cm, and 43 cm. (P = a + b + c)
    ______________________________
  5. fill Find the perimeter of a triangle with sides 130 cm, 81 cm, and 62 cm. (P = a + b + c)
    ______________________________
  6. fill Find the perimeter of a triangle with sides 86 cm, 88 cm, and 115 cm. (P = a + b + c)
    ______________________________
  7. fill Find the perimeter of a triangle with sides 32 cm, 76 cm, and 124 cm. (P = a + b + c)
    ______________________________
  8. fill Find the perimeter of a triangle with sides 134 cm, 27 cm, and 68 cm. (P = a + b + c)
    ______________________________
  9. fill Find the perimeter of a triangle with sides 56 cm, 105 cm, and 129 cm. (P = a + b + c)
    ______________________________
  10. fill Find the perimeter of a triangle with sides 8 cm, 134 cm, and 145 cm. (P = a + b + c)
    ______________________________
  11. fill Find the perimeter of a triangle with sides 60 cm, 113 cm, and 101 cm. (P = a + b + c)
    ______________________________
  12. fill Find the perimeter of a triangle with sides 65 cm, 99 cm, and 100 cm. (P = a + b + c)
    ______________________________
  13. fill Find the perimeter of a triangle with sides 137 cm, 117 cm, and 55 cm. (P = a + b + c)
    ______________________________
  14. fill Find the perimeter of a triangle with sides 66 cm, 75 cm, and 94 cm. (P = a + b + c)
    ______________________________
  15. fill Find the perimeter of a triangle with sides 35 cm, 77 cm, and 28 cm. (P = a + b + c)
    ______________________________
  16. fill Find the perimeter of a triangle with sides 26 cm, 137 cm, and 125 cm. (P = a + b + c)
    ______________________________
  17. fill Find the perimeter of a triangle with sides 106 cm, 53 cm, and 47 cm. (P = a + b + c)
    ______________________________
  18. fill Find the perimeter of a triangle with sides 63 cm, 93 cm, and 69 cm. (P = a + b + c)
    ______________________________
  19. fill Find the perimeter of a triangle with sides 3 cm, 34 cm, and 110 cm. (P = a + b + c)
    ______________________________
  20. fill Find the perimeter of a triangle with sides 137 cm, 142 cm, and 136 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.

Popular Worksheets

Popular Calculators

Popular Formulas

Latest Articles