G5
Pythagorean Theorem
勾股定理
Geometry / 几何Grades G5 - G8
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What It Looks Like
Recognition signals — when you see these, think of this structure:
- 1Right triangle in the problem
- 2Finding missing side of a triangle
- 3Questions about distances or diagonal lengths
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What It Really Tests
The core mathematical idea behind this structure:
In a right triangle, a² + b² = c² where c is the hypotenuse.
直角三角形中，a² + b² = c²，其中c是斜边。
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Why Students Get Stuck
Common mistakes to watch out for:
- ⚠Using wrong side as hypotenuse
- ⚠Forgetting to square or take square root
- ⚠Not checking if triangle is actually right-angled
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Your First Step
How to begin thinking about problems with this structure:
Identify the right angle and label the sides: two legs and one hypotenuse.
识别直角并标记边：两条直角边和一条斜边。
Related Structures
These structures share similar patterns or thinking approaches: