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

If the sum of two adjacent angles is 180^@ , then the ___ arms of the two angles are opposite rays.

In a rhombus, the sum of adjacent angles is

Fill in the blanks so as to make the following statements true: (i) If one angle of a linear pair is acute, then its other angle will be .......... (ii) A ray stands on a line, then the sum of the two adjacent angles so formed is .................. (iii) If the sum of two adjacent angles is 180^0, then the ............ arms of the two angles are opposite rays.

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

In a parallelogram the sum of any two adjacent angles is 180^(@) .

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.

The sum of the three angles of a triangle is 180^(@)

Read the following two statements which are taken as axiom: (i) If two lines intersect each other , then the vertically opposite angles are not equal. (ii) If a ray stands on a line , then the sum of two adjacent angles, so formed is equal to 180^(@) . Is this system of axioms consistent ? Justify your answer.

If the sum of two angles is greater than 180^(@) , then which of the following is not possible for the two angles ?

The sum of adjacent angles of a parallelogram is