Finding a Missing Leg - Worksheet 2 - 8th Grade

Easy

Use a² + b² = c² for right triangles, coordinate distances and contextual problems.

easy: Use small whole-number measurements.

15 problems · 15-20 minutes · Skills: pythagorean theorem, right triangles, algebra

About This Worksheet

This easy-level worksheet contains 15 problems designed for 8th Grade students practicing finding a missing leg. Easy worksheets use simpler numbers and straightforward problem types to build confidence and reinforce foundational skills.

Read labeled dimensions and coordinates. Recall multiplication facts and length units.

  • Use a² + b² = c² for right triangles, coordinate distances and contextual problems.
  • Check your result using the method in the example before moving to the next question.

How to Solve: Worked Example

Example Problem: A right triangle has hypotenuse 15 cm and one leg 9 cm. Find the other leg.
Solution Steps:
  1. Subtract the known leg squared from the hypotenuse squared.
  2. Take the positive square root.
Answer: 12 cm
Tip: Check your result using the method in the example before moving to the next question.
1
A right triangle has hypotenuse 10 cm and one leg 6 cm. Find the other leg.
2
A right triangle has hypotenuse 15 cm and one leg 9 cm. Find the other leg.
3
A right triangle has hypotenuse 5 cm and one leg 3 cm. Find the other leg.
4
A right triangle has hypotenuse 20 cm and one leg 12 cm. Find the other leg.
5
A right triangle has hypotenuse 25 cm and one leg 15 cm. Find the other leg.
6
A right triangle has hypotenuse 15 cm and one leg 9 cm. Find the other leg.
7
A right triangle has hypotenuse 25 cm and one leg 15 cm. Find the other leg.
8
A right triangle has hypotenuse 5 cm and one leg 3 cm. Find the other leg.
9
A right triangle has hypotenuse 20 cm and one leg 12 cm. Find the other leg.
10
A right triangle has hypotenuse 15 cm and one leg 9 cm. Find the other leg.
11
A right triangle has hypotenuse 5 cm and one leg 3 cm. Find the other leg.
12
A right triangle has hypotenuse 20 cm and one leg 12 cm. Find the other leg.
13
A right triangle has hypotenuse 25 cm and one leg 15 cm. Find the other leg.
14
A right triangle has hypotenuse 10 cm and one leg 6 cm. Find the other leg.
15
A right triangle has hypotenuse 15 cm and one leg 9 cm. Find the other leg.

Answer Key

1. 8 cm2. 12 cm3. 4 cm4. 16 cm5. 20 cm6. 12 cm7. 20 cm8. 4 cm9. 16 cm10. 12 cm11. 4 cm12. 16 cm13. 20 cm14. 8 cm15. 12 cm

Frequently Asked Questions

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Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

What skills does this pythagorean theorem worksheet cover?

This worksheet focuses on pythagorean theorem, right triangles, algebra. It is designed for 8th Grade students and provides structured practice through varied problem types with a worked example to guide students before they begin.

Can I use this worksheet in my classroom?

Yes. All worksheets on K12Worksheets are free for classroom use. You can print copies for your entire class. With 10 worksheets per subtopic at three difficulty levels, you have plenty of options for differentiated instruction and individualized practice.

How many problems are on this worksheet?

This worksheet contains 15 problems. It typically takes 15-20 minutes to complete. An answer key with all solutions is included so parents and teachers can check work quickly.