Question

9. In the adjoining figure:
(1) Is 21 adjacent to 22?
(ii) Is ZAOC adjacent to ZAOE?
(ii) Do ZCOE and LEOD form a linear pair?
(iv) Are ZBOD and ZDOA supplementary?
(v) Is Z1 vertically opposite to 24?
(vi) What is the vertically opposite angle of 5?
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Answer 1

Answer:

1. Yes Angle 1 and Angle 2 are adjacent angles with common vertex 'o' and common arm OC

2. Angle AOC, AOE, are not adjacent angles. Since they are not having a common arm.

3. Yes, Angle COE, EOD is Linear pair angles.

4. Yes angle BOD, DOA is supplementary angles.

5. Yes, Angle 1 and 4 are vertically opposite angles.

6. Vertically opposite angles for Angle 5 is ( 2 + 3 )

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Step-by-step explanation:

Answer 2

Step-by-step explanation:

(i) Yes, in ∠AOE, OC is common arm.

(ii) No, they have no non-common arms on opposite side of common arm.

(iii) Yes, they form linear pair.

(iv) Yes, they are supplementary.

(v) Yes, they are vertically opposite angles.

(vi) Vertically opposite angles of ∠5 is ∠COB