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6. a) Given that ABC-2x + 30 and CBD-(x + 15). If the two angles are complementary. Find i. The value of x ii. The size of each angle. (b)Find the approximate value of the expression by rounding off each number in the expression 0.0695x19812 6.8125 to one significant figure. 7. (a)Draw a line segment PQ-5.4cm and construct its perpendicular bisector using a ruler and a pair of compasses only. (b)Using a ruler and a pair of compasses only, construct i. An angle of 75° ii. An angle of 225° 8. In the diagram 1//m. find x and y if x = 2y X m
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