# Unknown Side Lengths in Right Triangles Worksheets

1. Worksheets >
2. Math >
3. Geometry >
4. Pythagorean Theorem >
5. Finding Unknown Side Lengths

Upskill with our free printable finding the unknown side lengths in right triangles worksheets! What is the length of the longest side of a right triangle whose legs are 8 units and 15 units in length? It's 17 units! We simply plugged the values in the Pythagorean equation and solved it. Now, what if the length of a leg goes missing? You're right! We rearrange the equation with the unknown length as the subject and press on as usual. To boil that down to formulas, we say c = √ (a2 + b2), a = √ (c2 - b2), b = √ (c2 - a2), where a and b are the leg lengths and c is the length of the hypotenuse. Everything will now go swimmingly when you obtain the missing side length of a right triangle!

Use our finding the missing side lengths in right triangles pdf worksheets for grade 7, grade 8, and high school.

CCSS: 8.G

Become a Member to Access the Following Additional Features (Free for a Limited Period):

Members-Only Features:

• Answer Key for All PDF Worksheets
• Google Classroom Integration
• Share via WhatsApp and Email
• Add to "My Collections"
• Create Folders to Organize Files