Q9 of 29 Page 61

Find the value of x in the following figures.

As the sum of all angles of a triangle is 180°


Angles of triangle DBC are 90°, 50° and x°




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9

Find the value of x in the following figures.

 9

Find the value of x in the following figures.

 9

Find the value of x in the following figures.

 10

In the figure at right, AB and CD are straight lines through the centre O of a circle. If ∠AOC = 98° and ∠CDE = 35°

find (i) ∠DCE (ii) ∠ABC