In the figure given below, is ∠1 adjacent to∠2? Give reasons.

In the figure given below:

(i) Is ∠1 adjacent to ∠2?

(ii) Is ∠AOC adjacent to ∠AOE?

(iii) Do ∠COE and ∠EOD form a linear pair?

(iv) Are ∠BOD and ∠DOA supplementary?

(v) Is ∠1 vertically opposite to ∠2?

(vi) What is the vertically opposite angle of ∠5?

Indicate which pairs of angles are:

(i) Vertically opposite angles.

(ii) Linear pairs.

Find the values of the angles x, y and z in each of the following:

(i)

(ii)

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 pint, 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 ________.