Mathematics

In the above figure, $$AB$$ is a straight line and $$OD\perp AB$$. Observe the figure and fill in the following blanks:

(i) $$\angle AOC$$ and $$\angle COE$$ form a pair of .. angles.
(ii) $$\angle AOC$$ and $$\angle COB$$ are .. angles.
(iii) $$\angle AOC$$ is of $$\angle COD$$.
(iv) $$\angle BOE$$ is . of $$\angle EOA$$.


SOLUTION
In the given figure,
$$AB$$ is a straight line and $$OD\perp AB$$
(i) $$\angle AOC$$ and $$\angle COE$$ form a pair of adjacent angles.
(ii) $$\angle AOC$$ and $$\angle COB$$ are supplementary angles.
(iii) $$\angle AOC$$ is the complement of $$\angle COD$$
(iv) $$\angle BOE$$ is a supplement of $$\angle EOA$$.
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