ABC and DEF are equilateral triangles. If area of triangles ABC : DEF = 1:2 and AB = 4, find DE.
Q:10 In the adjoining fig, AB=AC , DEF is an equilateral triangle. Then which relation is true?
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ABC & DEF are two equilateral triangles.A(ABC) : A(DEF)=1 : 2,AB = 4 find DE.|Class 10 |Similarity
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