Finding Missing Sides (Grade 7)

Practice worksheet for 7th graders on finding missing sides of geometric shapes using various methods.

Grade 7 Math GeometryFinding Missing Sides

Use This Worksheet

Includes

2 Short AnswerFill in the BlanksMultiple Choice

Standards

CCSS.MATH.CONTENT.7.G.B.4CCSS.MATH.CONTENT.7.G.B.5

Topics

mathgeometrymissing sidesgrade 7

6 sections · Free to use · Printable

Finding Missing Sides: Grade 7

Name:

Date:

Score:

Read each question carefully and solve for the missing side. Show your work where indicated.

1. Find the length of the missing side (x) in the right-angled triangle below. Use the Pythagorean theorem (a² + b² = c²).

Show your work:

x =

2. A rectangle has a perimeter of 40 cm. If its length is 12 cm, its width is cm.

3. A square has an area of 81 square meters. The length of one side is meters.

4. A circle has a circumference of 31.4 cm. What is its approximate diameter? (Use π ≈ 3.14)

Show your work:

Diameter =

5. An equilateral triangle has a perimeter of 27 inches. What is the length of one side?

6 inches

9 inches

12 inches

13.5 inches

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