Pythagoras theorem applies to which triangles?
- Equilateral
- Right-angled
- Isosceles
- Any triangle
Show answer and solution
Correct answer: B. Right-angled
1. Pythagoras theorem links the squares of three sides of a right triangle.
2. Specifically, hypotenuse squared equals the sum of squares of the other two sides.
3. It applies only to right-angled triangles.
_Source: syllabus Mathematics, Ch 6 "Triangles", §6.5_