kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
9.19 Perimeter of the Triangle

The sides of the triangle ABC are 12 cm, 5 cm and 9 cm. Find its perimeter.

Perimeter of the triangle (P) = S1 + S2 + S3
Where P is the perimeter of the triangle, S1, S2 and S3 are the sides of the triangle.
Given that,
S1 = 12 cm, S2 = 5 cm and S3 = 9 cm.
Hence P = 12 + 5 + 9
i.e P = 26 cm.
Therefore, the perimeter of the given triangle is 26 cm.

Directions: Read the above example carefully and answer the following questions. Also draw 10 different triangles, measure their angles and find their perimeters.
Q 1: The sides of the triangle ABC are 28 cm, 29 cm and 32 cm. Find its perimeter.
89 cm
79 cm
99 cm
45 cm

Q 2: The sides of the triangle ABC are 12y cm, 18y cm and 14y cm. Find 'y' if its perimeter is given by 1408 cm.
32 cm
36 cm
30 cm
38 cm

Question 3: This question is available to subscribers only!

Question 4: This question is available to subscribers only!

Subscription to kwizNET Learning System offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements
  • Choice of Math, English, Science, & Social Studies Curriculums
  • Excellent value for K-12 and ACT, SAT, & TOEFL Test Preparation
  • Get discount offers by sending an email to

Quiz Timer