The Total solution for NCERT class 6-12
(i) тИаBOC andтИаAOD areobtuse vertically opposite angles.(ii) тИаAOB andтИаAOE areadjacent complementary angles.(iii) тИаEOB andтИаEOD areequal supplementary angles.(iv) тИаEOA andтИаEOC areunequal supplementary angles.(v) тИаAOB andтИаAOE, тИаAOE and тИаEOD, тИаEOD andтИаCOD areadjacent angles but do not form a linear pair.