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Meena claims that if two adjacent angles are supplementary, their non-common arms form a straight line.
Which statement best describes her claim?

Class 9Linear Pair and Vertically Opposite AnglesGeometry — Lines and Angles
  • AFalse, supplementary adjacent angles never form a line
  • BTrue, this is the converse of the Linear Pair Axiom
  • CTrue only if the angles are equal
  • DFalse, the arms form a right angle

Step-by-Step Solution

If two adjacent angles are supplementary (sum 180°), their non-common arms lie on a straight line. This is the converse of the Linear Pair Axiom, so Meena is correct.
Answer: B) True, this is the converse of the Linear Pair Axiom

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