There isn't a more popular geometry formula than the Pythagorean Theorem! Learners understand the special side relationships in a right triangle. They use the Pythagorean Theorem to find missing sides and to solve problems. They begin working with the trigonometric ratios as well. 

Concepts

pythagorean theorem, right triangles, trigonometric ratios, sine, cosine, tangent, problem solving strategies

Show More Show Less

Additional Tags

math

Show More Show Less

Instructional Ideas

• Use practice problems for board work to allow for frequent checks for understanding

Classroom Considerations

• Learners should be familiar with solving simple quadratic equations using square roots
• The fourth in a 16-part series

Pros

• Uses context to introduce the Pythagorean Theorem, making it easier for pupils to grasp
• Shows detailed worked-out solutions for each example

Cons

• Does not use exact answers; any nonperfect square is written as a decimal

Common Core

HSG-SRT.C.8