28. In the given figure, the value of <DEC is
(A) 55
(B) 650
(C) 75
(0) 450
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(A) 55
angle DCE is 70(55+55+70=180)
EC=DC therefore in a isosceles triangle 70+2x=180 therefore DEC =55
angle DCE is 70(55+55+70=180)
EC=DC therefore in a isosceles triangle 70+2x=180 therefore DEC =55
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