Question

How many pairs of adjacent angles, in all, can you name in below fig.?

Answer 1

Pairs of adjacent angles are

`∠`EOC, `∠`DOC

`∠`EOD, `∠`DOB

`∠`DOC, `∠`COB

`∠`EOD, `∠`DOA

`∠`DOC, `∠`COA

`∠`BOC, `∠`BOA

`∠`BOA, `∠`BOD

`∠`BOA, `∠`BOE

`∠`EOC, `∠`COA

`∠`EOC, `∠`COB

∴ Hence 10 pairs of adjacent angles