Home › ICSE Class 9 › mathematics › Pythagoras Theorem › Pythagoras theorem applies to which type of tria…
Pythagoras theorem applies to which type of triangle?
AA right-angled triangle
BAn equilateral triangle only
CAn isosceles triangle only
DA scalene triangle only
Answer & Solution
Correct answer: A. A right-angled triangle
1. The theorem relates the squares of the sides of a triangle.
2. It is valid only if one angle is 90 degrees.
3. Such a triangle is right-angled.
4. So option A is correct.
_Source: Selina Concise Mathematics Class 9, Ch on Pythagoras Theorem (Mistral OCR'd PDF), section on Pythagoras theorem_
Related questions
In an isosceles right triangle each equal side is 10 cm. The hypotenuse isIf 7, 24 and c are sides of a right triangle with c the hypotenuse, c equalsA wire is bent into a right triangle with legs 5 cm and 12 cm. Total wire isHypotenuse of a right triangle is 17 cm and one leg is 8 cm. Other leg isFind x if sides of a right triangle are 9, x and 15 with 15 the hypotenuse.A rhombus has diagonals 16 cm and 12 cm. The side of the rhombus isTriangle ABC is right-angled at C with BC = 24 cm and AC = 7 cm. AB equalsTwo poles of heights 15 m and 6 m stand 12 m apart. The distance between their tops is