Q27 of 78 Page 23

The number of common points in the two angles marked in Fig. 2.18 is _____.

2

Only P and Q are common


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25

The number of straight angles in Fig. 2.17 is _____.

 26

The number of right angles in a straight angle is _____ and that in a complete angle is_____.

 28

The number of common points in the two angles marked in Fig. 2.19 is _____.

 29

The number of common points in the two angles marked in Fig. 2.20 ______.