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In two right triangles, the right angles are equal and the two hypotenuses are equal. This information alone proves congruence:

Class 9SSS and RHS CongruenceGeometry — Triangles
  • ANo, a side must also be equal
  • BYes, always
  • COnly if both are isosceles
  • DOnly if both are equilateral

Step-by-Step Solution

RHS needs right angle + hypotenuse + one leg. Right angle and hypotenuse alone are not enough.
Answer: A) No, a side must also be equal

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