LINEAR PAIR Two adjacents angles are said to form a linear pair of angles if their non-common arms are two opposite rays.

If the sum of the two adjacent angles is 180^(@) ; then their non-common arms are two oppposite rays.

Can two acute angles from a linear pair?

Assertion : The value of x in the following figure is 40°. Reason: A linear pair is a pair of adjacent angles whose non-common arms are opposite rays.

Two angles are making a linear pair. If one of them is one-third of the other, find the angles.

Two angles of a linear pair are in the ratio 1:5. Find angles.

The angle which makes a linear pair with an angle of 61 o is

In a pair of adjacent angles, (i) vertex is always common, (ii) one arm is always common, and (iii) uncommon arms are always opposite rays Then

The angle which makes a linear pair with an angle of 61^(@) is of

VERTICALIY OPPOSITE ANGLES Two angles formed by two intersecting lines having no common arm are called vertically opposite angles.

Adjacent angles two angles of a quadrilateral are called adjacent angles if they have a common side as arm.