A student claims, “Any two adjacent angles are supplementary.” Which statement best…
MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles
Problem
A student claims, “Any two adjacent angles are supplementary.” Which statement best explains why the claim is incorrect?
(a) Adjacent angles are always complementary, not supplementary.
(b) Adjacent angles are vertically opposite, so they are equal, not supplementary.
(c) Adjacent angles are supplementary only when their non-common arms form a straight line.
(d) Adjacent angles are supplementary only when their common arm lies on a straight line.