# Give reason: a) construction of an angle 22.5 degree is possible with the help of a ruler and compass. b) it is not possible to construct a triangle ABC, given that BC = 7cm angle B = 45 degree AB -AC= 10 cm. c) We can construct an angle of 67 degree using ruler and compass d) construction of triangle DEF, if EF = 5.5 cm angle E= 75 degree DE-DF=2 cm is possible

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