# Ex.5.1 Q13 Lines and Angles - NCERT Maths Class 7

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## Question

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 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 ______________

## Text Solution

**Steps:**

(i) \(90^\circ\)

(ii) \(180^\circ\)

(iii) Supplementary

(iv) Linear Pair

(v) Equal

(vi) Obtuse angle