8th Grade · Geometry
Converse
8.G.B.6
Definition
If the sum of the squares of two sides equals the square of the third, then the triangle is a right triangle.
Examples
- Sides 6,8,10: 36+64=100=10² — right triangle.
- Sides 4,5,7: 16+25=41≠49 — NOT a right triangle.
Key rule
Use the converse to check if a triangle is right by testing a²+b²=c².
Memory hook
Check the equation to prove it's a right triangle.