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# Fill in the blanks:

$(i)$ If two angles are complementary, then the sum of their measures is _______.

$(ii)$ If two angles are supplementary, then the sum of their measures is ______.

$(iii)$ Two angles forming a linear pair are _______________.

$(iv)$ If two adjacent angles are supplementary, they form a ___________.

$(v)$ If two lines intersect at a point, then the vertically opposite angles are always _____________.

$(vi)$ If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are __________.

**To do:**

We have to fill in the given blanks.

**Solution:**

(i) If two angles are complementary, then the sum of their measures is $90^{\circ}$.

(ii) If two angles are supplementary, then the sum of their measures is $180^{\circ}$.

(iii) Two angles forming a linear pair are **Supplementary.**

(iv) If two adjacent angles are supplementary, they form a **Linear pair.**

(v) If two lines intersect at a point, then the vertically opposite angles are always **equal.**

(vi) If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are **Obtuse Angles.**

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