Question

pls answer the whole page
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Answer 1

Answer:

18. 100°

since Angle P and Angle Q is 60° and 40° respectively....and we know that exterior angle is equal to sum of opposite interior angles and those two given angles are the opposite interior angles...

19. both 1 and 2 are correct

vertically opposite angles are equal and the transversal cutting two straight lines forms co interior angles which when added is equal to 180°.

The last sum I cannot see the whole picture...